MedDRA® TERM SELECTION:POINTS TO CONSIDER
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Release 4.6
Based on MedDRA |
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The Medical Dictionary for Regulatory Activities terminology (MedDRA) was designed for sharing regulatory information for human medical products. However, unless users achieve consistency in how they assign terms to verbatim reports of symptoms, signs, diseases, etc., use of MedDRA cannot have the desired harmonizing effect in the exchange of coded data.
This MedDRA Term Selection: Points to Consider (MTS:PTC) document is an ICH-endorsed guide for MedDRA users. It is updated in step with new MedDRA versions and is a companion document to MedDRA. It was developed and is maintained by a working group charged by the ICH Steering Committee. The working group consists of regulatory and industry representatives of the European Union, Japan and the United States, as well as representatives from the Canadian regulatory authority, the MedDRA Maintenance and Support Services Organization (MSSO) and the Japanese Maintenance Organization (JMO). (See Appendix, Section 4.3 for list of members).
1.1 – Objectives of this Document
The objective of the MTS:PTC document is to promote accurate and consistent term selection.
Organizations are encouraged to document their term selection methods and quality assurance procedures in organization-specific coding guidelines which should be consistent with the MTS:PTC.
Consistent term selection promotes medical accuracy for sharing MedDRA-coded data and facilitates a common understanding of shared data among academic, commercial and regulatory entities. The MTS:PTC could also be used by healthcare professional, researchers, and other parties outside of the regulated biopharmaceutical industry.
The document provides term selection advice for business purposes and regulatory requirements. There may be examples that do not reflect practices and requirements in all regions. This document does not specify regulatory reporting requirements, nor does it address database issues. As experience with MedDRA increases, and as MedDRA changes, there will be revisions to this document.
1.2 – Uses of MedDRA
Term selection for adverse reactions/adverse events (ARs/AEs), device-related events, product quality issues, medication errors, exposures, medical history, social history, investigations, misuse and abuse, off label use, and indications is addressed in this MTS:PTC document.
MedDRA’s structure allows for aggregation of those reported terms in medically meaningful groupings to facilitate analysis of safety data. MedDRA can also be used to list AR/AE data in reports (tables, line listings, etc), compute frequencies of similar ARs/AEs, and capture and analyze related data such as product indications, investigations, and medical and social history.
1.3 – How to Use this Document
The MTS:PTC document does not address every potential term selection situation. Medical judgment and common sense should also be applied.
This document is not a substitute for MedDRA training. It is essential for users to have knowledge of MedDRA’s structure and content. For optimal MedDRA term selection, one should also refer to the MedDRA Introductory Guide (See Appendix, Section 4.2).
1.4 – Preferred Option
In some cases, where there is more than one option for selecting terms, a “preferred option” is identified in this document. Designation of a “preferred option” does not limit MedDRA users to applying that option. An organization should be consistent in the option that they choose to use.
1.5 – MedDRA Browsing Tools
The MSSO and JMO provide two browsers (a desktop browser and a Web-based browser) that allow for searching and viewing the terminology (See Appendix, Section 4.2). Users may find these browsers useful aids in term selection.
Section 2 – GENERAL TERM SELECTION PRINCIPLES
2.1 – Quality of Source Data
The quality of the original reported information directly impacts the quality of data output. Clarification should be obtained for data that are ambiguous, confusing or unintelligible. If clarification cannot be obtained, refer to Section 3.4.
2.2 – Quality Assurance
To promote consistency, organizations should document their term selection methods and quality assurance procedures in coding guidelines consistent with this MTS:PTC document.
Clear initial data can be promoted through careful design of data collection forms, and training of individuals in data collections and follow-up (e.g., investigators, drug sales representatives).
Term selection should be reviewed by a qualified individual, i.e., a person with medical background or training who has also received MedDRA training.
Human oversight of term selection performed by IT tools (such as an autoencoder) is needed to assure that the end result fully reflects the reported information and makes medical sense.
2.3 – Do Not Alter MedDRA
MedDRA is a standardized terminology with a pre-defined term hierarchy that should not be altered. Users must not make ad hoc structural alterations to MedDRA, including changing the primary SOC allocation; doing so would compromise the integrity of this standard. If terms are found to be incorrectly placed in the MedDRA hierarchy, a change request should be submitted to the MSSO.
Example
Change Request to Re-Assign Primary SOC |
In a previous version of MedDRA, PT Factor VIII deficiency was incorrectly assigned to primary SOC Blood and lymphatic system disorders. By means of a Change Request, the PT was re-assigned to primary SOC Congenital, familial and genetic disorders (making SOC Blood and lymphatic system disorders its secondary SOC assignment) |
2.4 – Always Select a Lowest Level Term
MedDRA Lowest Level Term(s) (LLT) that most accurately reflects the reported verbatim information should be selected.
The degree of specificity of some MedDRA LLTs may be challenging for term selection. Here are some tips for specific instances:
A single letter difference in a reported verbatim text can impact the
meaning of the word and consequently the term selection
Example
Reported | LLT Selected |
Lip sore | Lip sore (PT Lip pain) |
Lip sores | Sores lip (PT Cheilitis) |
Sore gums | Sore gums (PT Gingival pain) |
Sores gum | Sores gum (PT Gingival inflammation) |
Gender specific terms
MedDRA generally excludes terms with demographic descriptors (age, gender, etc.), but some terms with gender qualifiers are included if the gender renders the concept unique.
Example
Distinct Gender Specific Terms |
In MedDRA, there are separate LLTs/PTs for Infertility, Infertility female and Infertility male |
Organization specific coding guidelines should address instances when it is important to capture gender specific concepts.
MedDRA users should also consider the impact of gender-specific terms when comparing current data to data coded with a legacy terminology in which such gender-specificity may not have been available.
Example
Gender Specificity – Legacy Terms vs. MedDRA |
Consider the impact of selecting gender-specific MedDRA terms for breast cancer (e.g., LLT Breast cancer female) when comparing data coded in a legacy terminology with only a single “Breast cancer” term. |
Postoperative and post procedural terms
MedDRA contains some “postoperative” and “post procedural” terms. Select the most specific term available.
Example
Reported | LLT Selected |
Bleeding after surgery | Bleeding postoperative |
Sepsis occurred after the procedure | Post procedural sepsis |
Newly added terms
More specific LLTs may be available in a new version of MedDRA. See Appendix, Section 4.2.
2.5 – Select Only Current Lowest Level Terms
Non-current LLTs should not be used for term selection.
2.6 – When to Request a Term
Do not address deficiencies in MedDRA with organization-specific solutions. If there is no MedDRA term available to adequately reflect the reported information, submit a change request to MSSO.
Example
Change Request for a New Term |
LLT HBV coinfection was added to MedDRA following a user’s request. |
2.7 – Use of Medical Judgment in Term Selection
If an exact match cannot be found, medical judgment should be used to adequately represent the medical concept with an existing MedDRA term.
Example
Reported | LLT Selected | Comment |
Brittle hair | Hair breakage | There is no MedDRA term for “brittle hair”. LLT Hair breakage more accurately reflects the reported concept than the less specific LLT Hair disorder |
2.8 – Selecting More Than One Term
When a specific medical concept is not represented by a single MedDRA term, consider requesting a new term through the change request process (See Section 2.6). While waiting for the new term, select one or more existing terms using a consistent approach with careful consideration of the impact on data retrieval, analysis and reporting.
In some cases, it may be appropriate to select more than one MedDRA LLT to represent the reported information. If only one term is selected, specificity may be lost; on the other hand, selecting more than one term may lead to redundant counts. Established procedures should be documented.
Example
More Than One LLT Selected |
There is no single MedDRA term for “metastatic gingival cancer”. Therefore, the options are: 1. Select LLT Gingival cancer OR LLT Metastatic carcinoma 2. Select LLT Gingival cancer AND LLT Metastatic carcinoma |
2.9 – Check the Hierarchy
When considering selecting an LLT, check the hierarchy above the LLT (PT level and further up the hierarchy to HLT, HLGT and SOC) to ensure the placement accurately reflects the meaning of the reported term.
2.10 – Select Terms for All Reported Information, Do Not Add Information
Select terms for every AR/AE reported, regardless of causal association. In addition, select terms for device-related events, product quality issues, medication errors, medical history, social history, investigations, and indications as appropriate.
If a diagnosis is reported with characteristic signs and symptoms, the preferred option is to select a term for the diagnosis only (see Section 3.1 for details and examples).
When selecting terms, no reported information should be excluded from the term selection process; similarly, do not add information by selecting a term for a diagnosis if only signs or symptoms are reported.
Example
Reported | LLT Selected | Comment |
Abdominal pain, increased serum amylase, and increased serum lipase | Abdominal pain | It is inappropriate to assign an LLT for diagnosis of “pancreatitis” |
Serum amylase increased | ||
Lipase increased |
Section 3 – TERM SELECTION POINTS
3.1 – Definitive and Provisional Diagnoses with or without Signs and Symptoms
The table below provides term selection options for definitive and provisional diagnoses with or without signs/symptoms reported. Examples are listed below the table.
A provisional diagnosis may be described as “suspicion of”, “probable”, “presumed”, likely”, “rule out”, “questionable”, “differential”, etc.
The preferred option for a single or multiple provisional diagnosis(es) is to select a term(s) for the diagnosis(es) and terms for reported signs and symptoms. This is because a provisional diagnosis may change while signs/symptoms do not.
SUMMARY OF PREFERRED AND ALTERNATE OPTIONS | |
SINGLE DIAGNOSIS | |
DEFINITIVE DIAGNOSIS | PROVISIONAL DIAGNOSIS |
Single definitive diagnosis without signs/symptoms |
Single provisional diagnosis without signs/symptoms possible option) |
Single definitive diagnosis with signs/symptoms signs/symptoms Note: Always include signs/symptoms not associated with diagnosis SEE EXAMPLE 1 |
Single provisional diagnosis with signs/symptoms and signs/symptoms Note: Always include signs/symptoms not associated with diagnosis SEE EXAMPLE 2 |
MULTIPLE DIAGNOSES | |
DEFINITIVE DIAGNOSES | PROVISIONAL DIAGNOSES |
Multiple definitive diagnoses without signs/symptoms option) |
Multiple provisional diagnoses without signs/symptoms (only possible option) |
Multiple definitive diagnoses with signs/symptoms symptoms Note: Always include signs/symptoms not associated with diagnosis SEE EXAMPLE 3 |
Multiple provisional diagnoses with signs/symptoms diagnoses and signs/symptoms Note: Always include signs/symptoms not associated with diagnosis SEE EXAMPLE 4 |
EXAMPLES | |||
Example | Reported | LLT Selected | Preferred Option |
1 | Anaphylactic reaction, rash dyspnea, hypotension, and laryngospasm |
Anaphylactic reaction | ![]() |
Anaphylactic reaction Rash Dyspnea Hypotension Laryngospasm |
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2 | Possible myocardial infarction with chest pain, dyspnea, diaphoresis |
Myocardial infarction Chest pain Dyspnea Diaphoresis |
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Chest pain Dyspnea Diaphoresis |
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3 | Pulmonary embolism, myocardial infarction, and congestive heart failure with chest pain, cyanosis, shortness of breath, and blood pressure decreased |
Pulmonary embolism Myocardial infarction Congestive heart failure |
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Pulmonary embolism Myocardial infarction Congestive heart failure Chest pain Cyanosis Shortness of breath Blood pressure decreased |
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4 | Chest pain, cyanosis, shortness of breath, and blood pressure decreased. Differential diagnosis includes pulmonary embolism, myocardial infarction, and congestive heart failure |
Pulmonary embolism Myocardial infarction Congestive heart failure Chest pain Cyanosis Shortness of breath Blood pressure decreased |
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Chest pain Cyanosis Shortness of breath Blood pressure decreased |
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Always include signs/ symptoms not associated with diagnosis | Myocardial infarction, chest pain, dyspnea, diaphoresis, ECG changes and jaundice |
Myocardial infarction Jaundice (note that jaundice is not typically associated with myocardial infarction) |
3.2 – Death and Other Patient Outcomes
Death, disability, and hospitalization are considered outcomes in the context of safety reporting and not usually considered ARs/AEs. Outcomes are typically recorded in a separate manner (data field) from AR/AE information. A term for the outcome should be selected if it is the only information reported or provides significant clinical information.
(For reports of suicide and self-harm, see Section 3.3).
Death is an outcome and not usually considered an AR/AE. If ARs/AEs are reported along with death, select terms for the ARs/AEs. Record the fatal outcome in an appropriate data field.
Example
Reported | LLT Selected | Comment |
Death due to myocardial infarction |
Myocardial infarction | Record death as an outcome |
Constipation, ruptured bowel, peritonitis, sepsis; patient died |
Constipation Perforated bowel Peritonitis Sepsis |
3.2.2 Death as the only reported information
If the only information reported is death, select the most specific death term available. Circumstances of death should not be inferred but recorded only if stated by the reporter.
Death terms in MedDRA are linked to HLGT Fatal outcomes.
Example
Reported | LLT Selected |
Patient was found dead | Found dead |
Patient died in childbirth | Maternal death during childbirth |
The autopsy report stated that the cause of death was natural |
Death from natural causes |
3.2.3 Death terms that add important clinical information
Death terms that add important clinical information should be selected along with any reported ARs/AEs.
Example
Reported | LLT Selected |
Patient experienced a rash and had sudden cardiac death |
Rash Sudden cardiac death |
3.2.4 Other patient outcomes (non-fatal)
Hospitalization, disability and other patient outcomes are not generally considered ARs/AEs.
Example
Reported | LLT Selected | Comment |
Hospitalisation due to congestive heart failure |
Congestive heart failure | Record hospitalisation as an outcome |
If the only information reported is the patient outcome, select the most specific term available.
Example
Reported | LLT Selected |
Patient was hospitalised | Hospitalisation |
3.3 – Suicide and Self-Harm
Accurate and consistent term selection for reports of suicide attempts, completed suicides and self-harm is necessary for data retrieval and analysis. If the motive for reported injury is not clear, seek clarification from the source.
Do not assume that an overdose – including an intentional overdose – is a suicide attempt. Select only the appropriate overdose term (See Section 3.18).
3.3.2 If self-injury is reported
For reports of self-injury that do not mention suicide or suicide attempt, select only the appropriate self-injury term.
Example
Reported | LLT Selected | Comment |
Self slashing | Self inflicted laceration | LLT Self inflicted laceration is linked to PT Intentional self-injury |
Cut her own wrists | ||
Cut wrists in a suicide attempt | Suicide attempt | In addition, LLT Self inflicted laceration can be selected |
If a suicide attempt is fatal, select the term that reflects the outcome instead of the attempt only.
Example
Reported | LLT Selected | Comment |
Suicide attempt resulted in death |
Completed suicide | Record death as an outcome |
3.4 – Conflicting/Ambiguous/Vague Information
When conflicting, ambiguous or vague information is reported, term selection to support appropriate data retrieval may be difficult. When this occurs, attempt to obtain more specific information. If clarification cannot be achieved, select terms as illustrated in the examples below (Sections 3.4.1 through 3.4.3).
Example
Reported | LLT Selected | Comment |
Hyperkalemia with a serum potassium of 1.6 mEq/L |
Serum potassium abnormal | LLT Serum potassium abnormal covers both of the reported concepts (note: serum potassium of 1.6 mEq/L is a low result, not high) |
Example
Reported | LLT Selected | Comment |
GU pain | Pain | Effort should be made to obtain clarification of the meaning of "GU" from the source so that more specific term selection may be possible. “GU” could be either “genito-urinary” or “gastric ulcer”. If additional information is not available, then select a term to reflect the information that is known, i.e., LLT Pain |
For information that is vague, attempt to obtain clarification. If clarification cannot be achieved, select an LLT that reflects the vague nature of the reported event.
Example
Reported | LLT Selected | Comment |
Turned green | Unevaluable event | “Turned green” reported alone is vague; this could refer to a patient condition or even to a product (e.g., pills) |
Patient had a medical problem of unclear type | Ill-defined disorder | Since it is known that there is some form of a medical disorder, LLT Ill-defined disordercan be selected |
3.5 – Combination Terms
A combination term in MedDRA is a single medical concept combined with additional medical wording that provides important information on pathophysiology or etiology. A combination term is an internationally recognized distinct and robust medical concept as illustrated in the examples below.
Example
MedDRA Combination Terms |
PT Diabetic retinopathy PT Hypertensive cardiomegaly PT Eosinophilic pneumonia |
A combination term may be selected for certain reported ARs/AEs (e.g., a condition “due to” another condition), keeping the following points in mind (NOTE: medical judgment should be applied):
3.5.1 Diagnosis and sign/sympton
If a diagnosis and its characteristic signs or symptoms are reported, select a term for the diagnosis (See Section 3.1). A MedDRA combination term is not needed in this instance.
Example
Reported | LLT Selected |
Chest pain due to myocardial infarction | Myocardial infarction |
3.5.2 One reported condition is more specific than the other
If two conditions are reported in combination, and one is more specific than the other, select a term for the more specific condition.
Example
Reported | LLT Selected |
Hepatic function disorder (acute hepatitis) |
Hepatitis acute |
Arrhythmia due to atrial fibrillation | Atrial fibrillation |
3.5.3 A MedDRA combination term is available
If two conditions are reported in combination, and a single MedDRA combination term is available to represent them, select that term.
Example
Reported | LLT Selected |
Retinopathy due to diabetes | Diabetic retinopathy |
Rash with itching | Itchy rash |
3.5.4 When to "split" into more than one MedDRA term
If “splitting” the reported ARs/AEs provides more clinical information, select more than one MedDRA term.
Example
Reported | LLT Selected |
Diarrhea and vomiting | Diarrhea Vomiting |
Wrist fracture due to fall | Wrist fracture Fall |
Exercise medical judgment so that information is not lost when “splitting” a reported term. Always check the MedDRA hierarchy above the selected term to be sure it is appropriate for the reported information.
Example
Reported | LLT Selected | Comment |
Hematoma due to an animal bite |
Animal bite Traumatic hematoma |
LLT Traumatic hematoma is more appropriate than LLT Hematoma (LLT Traumatic hematoma links to HLT Non-site specific injuries NEC and HLT Haemorrhages NEC while LLT Hematoma links only to HLT Haemorrhages NEC) |
3.5.5 Event reported with pre-existing condition
If an event is reported along with a pre-existing condition that has not changed, and if there is not an appropriate combination term in MedDRA, select a term for the event only. (See Section 3.9 for pre-existing conditions that have changed).
Example
Reported | LLT Selected | Comment |
Shortness of breath due to pre-existing cancer |
Shortness of breath | In this instance, “shortness of breath” is the event; “cancer” is the pre-existing condition that has not changed |
3.6 – Age vs. Event Specificity
3.6.1 MedDRA term includes age and event information
Example
Reported | LLT Selected |
Jaundice in a newborn | Jaundice of newborn |
Developed psychosis at age 6 years | Childhood psychosis |
3.6.2 No available MedDRA term includes both age and event information
The preferred option is to select a term for the event and record the age in the appropriate demographic field.
Alternatively, select terms (more than one) that together reflect both the age of the patient and the event.
Example
Reported | LLT Selected | Preferred Option | Comment |
Pancreatitis in a newborn |
Pancreatitis | ![]() |
Record patient age in a demographic field |
Pancreatitis Neonatal disorder |
Record patient age in a demographic field. In addition, select LLT Neonatal disorder |
3.7 – Body Site vs. Event Specificity
3.7.1 MedDRA term includes body site and event information
Example
Reported | LLT Selected |
Skin rash on face | Rash on face |
3.7.2 No available MedDRA term includes both both site and event information
Select a term for the event, rather than a term that reflects a non-specific condition at the body site; in other words, the event information generally
has priority.
Example
Reported | LLT Selected | Comment |
Skin rash on chest | Skin rash | In this instance, there is no available term for a skin rash on the chest |
However, medical judgment is required, and sometimes, the body site information should have priority as in the example below.
Example
Reported | LLT Selected | Comment |
Cyanosis at injection site | Injection site reaction | Cyanosis implies a generalized disorder. In this example, selecting LLT Cyanosis would result in loss of important medical information and miscommunication |
3.7.3 Event occurring at multiple body sites
If an event is reported to occur at more than one body site, and if all of those LLTs link to the same PT, then select a single LLT that most accurately reflects the event; in other words, the event information has priority.
Example
Reported | LLT Selected | Comment |
Skin rash on face and neck |
Skin rash | LLT Rash on face and LLT Neck rash both link to PT Rash |
Oedema of hands and feet |
Oedema of extremities | LLT Oedema hands and LLT Oedematous feet both link to PT Oedema peripheral. However, LLT Oedema of extremities most accurately reflects the event in a single term |
3.8 – Location Specific vs. Microorganism Specific Infection
3.8.1 MedDRA term includes microorganism and anatomic location
Example
Reported | LLT Selected | Comment |
Pneumococcal pneumonia | Pneumococcal pneumonia | In this example, the implied anatomic location is the lung |
3.8.2 No available MedDRA term includes both microorganism and anatomic location
The preferred option is to select terms for both the microorganism specific infection and the anatomic location.
Alternatively, select a term that reflects the anatomic location or select a term that reflects the microorganism specific infection. Medical judgment should be used in deciding whether anatomic location or the microorganism specific infection should take priority.
Example
Reported | LLT Selected | Preferred Option | Comment |
Respiratory chlamydial infection | Chlamydial infection Respiratory infection | ![]() |
Represents both microorganism specific infection and anatomic location |
Respiratory infection | Represents location-specific infection | ||
Chlamydial infection | Represents microorganism specific infection |
3.9 – Modification of Pre-existing Conditions
Pre-existing conditions that have changed may be considered ARs/AEs, especially if the condition has worsened or progressed. (See Section 3.5.5 for pre-existing conditions that have not changed, and Section 3.22 for an unexpected improvement of a pre-existing condition).
Example
Ways That Pre-existing Conditions May Be Modified |
Aggravated, exacerbated, worsened Recurrent Progressive |
Select a term that most accurately reflects the modified condition (if such term exists).
Example
Reported | LLT Selected |
Exacerbation of myasthenia gravis | Myasthenia gravis aggravated |
If no such term exists, consider these approaches:
Ø Example 1: Select a term for the pre-existing condition and record the modification in a consistent, documented way in appropriate data fields
Ø Example 2: Select a term for the pre-existing condition and a second term for the modification of the condition (e.g., LLT Condition aggravated, LLT Disease progression). Record the modification in a consistent, documented way in appropriate data fields.
Example
Examples | Reported | LLT Selected | Comment |
Example 1 | Jaundice aggravated |
Jaundice | Record “aggravated” in a consistent, documented way |
Example 2 | Jaundice aggravated |
Jaundice Condition aggravated |
Record "aggravated" in a consistent, documented way. Select terms for the pre-existing condition and the modification. |
3.10 – Exposures during Pregnancy and Breast Feeding
To select the most appropriate term (or terms), first determine if the subject/patient who experienced the event is the mother or the child/fetus.
Ø Patient became pregnant while receiving product
Pregnancy is not normally considered an adverse event, but organizations may wish to record this information in their databases.
Example
Reported | LLT Selected | Comment |
Pregnancy (no adverse effect) | Pregnancy No adverse effect |
Select LLT No adverse effect (in addition to LLT I) if no adverse event has occurred. (See Section 3.21) |
Pregnancy (outcome unknown) |
Pregnancy | Select LLT Pregnancy only if neither outcome nor occurrence of AE is known |
Ø Pregnant patient receiving medication experienced adverse event
Example
Reported | LLT Selected | Comment |
Pregnant patient receiving drug X experienced a pruritic rash |
Maternal exposure during pregnancy Pruritic rash |
LLT Pregnancy can be selected for medical history, concomitant medical condition |
3.10.2 Events in the child or fetus
Select terms for both the type of exposure and any adverse event(s).
Example
Setting/Patient | Reported | LLT Selected |
Fetus with AE; exposed in utero; mother took product |
Pregnant woman taking drug X; fetal tachycardia noted on routine examination |
Drug exposure in utero Fetal tachycardia |
Baby with AE; exposed in utero; father took product |
Baby born with cleft palate; father had been taking drug X at time of conception |
Paternal drug exposure before pregancy Cleft palate |
Newborn with AE; exposed to product via breast milk |
Mother exposed to drug X; nursing newborn experienced vomiting |
Drug exposure via breast milk Vomiting neonatal |
3.11 – Congenital Terms
“Congenital” = any condition present at birth, whether genetically inherited or occurring in utero. (See the MedDRA Introductory Guide).
3.11.1 Condition described as congenital
Select terms from SOC Congenital, familial and genetic disorders when the reporter describes the condition as congenital or when medical judgment establishes that the condition was present at the time of birth.
Example
Reported | LLT Selected |
Congenital heart disease | Heart disease congenital |
Child born with heart disease |
3.11.2 Condition not congenital/not present at birth
If the condition is not described as congenital or present at birth, select the non-qualified term for the condition; if a non-qualified term is not available, select the “acquired” term for the condition.
Example
Reported | LLT Selected | Comment |
Night blindness | Night blindness | LLT/PT Night blindness (links to primary SOC Eye disorders). Do not assume the condition is congenital (LLT/PT Congenital night blindness) |
Cholangiectasis | Cholangiectasis acquired |
3.12 – Neoplasms
Due to the large number of neoplasm types, specific guidance cannot be provided for all situations. The MedDRA Introductory Guide describes the use and placement of neoplasm terms and related terms in MedDRA.
Keep in mind the following points:
Neoplasms Terms in MedDRA |
“Cancer” and “carcinoma” are synonyms (Appendix B of Introductory Guide) “Tumo(u)r” terms refer to neoplasia “Lump” and “mass” terms are not neoplasia |
If the type of neoplasia is not clear, seek clarification from the reporter. Consult medical experts when selecting terms for difficult or unusual neoplasms.
3.12.1 Do not infer malignancy
Select a malignancy term only if malignancy is stated by the reporter. Reports of “tumo(u)r” events should not be assigned a “cancer”, “carcinoma” or another malignant term unless it is clear that malignancy is present.
Example
Reported | LLT Selected |
Tumour growing on skin | Skin tumour |
Cancer growing on tongue | Malignant tongue cancer |
3.13 – Medical and Surgical Procedures
Terms in SOC Surgical and medical procedures are generally not appropriate for ARs/AEs. Terms in this SOC are not multi-axial. Be aware of the impact of these terms on data retrieval, analysis and reporting.
Keep in mind the following points:
3.13.1 Only the procedure is reported
If only a procedure is reported, select a term for the procedure.
Example
Reported | LLT Selected |
Patient had transfusion of platelets | Platelet transfusion |
Patient had tonsillectomy in childhood | Tonsillectomy |
3.13.2 Procedure and diagnosis are reported
If a procedure is reported with a diagnosis, the preferred option is to select terms for both the procedure and diagnosis. Alternatively, select a term only for the diagnosis.
Example
Reported | LLT Selected | Preferred Option | Comment |
Liver transplantation due to liver injury |
Liver transplantation Liver injury |
![]() |
Selecting term for the procedure may indicate severity of the condition |
Liver injury |
3.14 – Investigations
SOC Investigations includes test names with qualifiers (e.g., increased, decreased, abnormal, normal) and without qualifiers. Corresponding medical conditions (such as “hyper-” and “hypo-” terms) are in other “disorder” SOCs (e.g., SOC Metabolism and nutrition disorders).
SOC Investigations is not multi-axial; always consider the terms in this SOC for data retrieval.
3.14.1 Results of investigations as ARs/AEs
Keep in mind the following points when selecting terms for results of investigations:
Ø Selecting terms for a medical condition vs. an investigation result
Example
Reported | LLT Selected | Comment |
Hypoglycemia | Hypoglycemia | LLT Hypoglycemia links to SOC Metabolism and nutrition disorders |
Decreased glucose | Glucose decreased | LLT Glucose decreased links to SOC Investigations |
Ø Unambiguous investigation result
Example
Reported | LLT Selected | Comment |
Glucose 40 mg/dL | Glucose low | Glucose is clearly below the reference range |
Ø Ambiguous investigation result
Example
Reported | LLT Selected | Comment |
His glucose was 40 | Glucose abnormal | In this example, no units have been reported. Select LLT Glucose abnormal if clarification cannot be obtained |
3.14.2 Investigation results consistent with diagnosis
When investigation results are reported with a diagnosis, select only a term for the diagnosis if investigation results are consistent with the diagnosis.
Example
Reported | LLT Selected | Comment |
Elevated potassium, K 7.0 mmol/L, and hyperkalemia |
Hyperkalemia | It is not necessary to select LLT Potassium increased |
3.14.3 Investigation results not consistent with diagnosis
When investigation results are reported with a diagnosis, select a term for the diagnosis and also select terms for any investigation results that are not consistent with the diagnosis.
Example
Reported | LLT Selected | Comment |
Alopecia, rash, and elevated potassium 7.0 mmol/L |
Alopecia Rash Potassium increased |
Elevated potassium is not consistent with the diagnoses of alopecia and rash. Terms for all concepts should be selected |
3.14.4 Grouped investigation result terms
Select a term for each investigation result as reported; do not “lump” together separate investigation results under an inclusive term unless reported as such.
Example
Reported | LLT Selected | Comment |
Abnormalities of liver function tests |
Abnormal liver function tests |
|
Increased alkaline phosphatase, increased SGPT, increased SGOT and elevated LDH< |
Alkaline phosphatase increased SGPT increased SGOT increased LDH increased |
Select four individual terms for the investigation results. A single term such as LLT Liver function tests abnormal should not be selected |
3.14.5 Investigation terms without qualifiers
Terms in SOC Investigations without qualifiers may be used to record test names when entering diagnostic test data.
Example
Information/Reported (Verbatim) |
LLT Selected for Test Name | Comment |
Cardiac output measured |
Cardiac output | |
Increased blood sugar | Blood glucose | LLT Blood glucose increased should not be selected as it is both a test name and a result* |
*Enter a qualifier (e.g., "increased") or a numeric result (if available) into the "Result" data field.
3.15 – Medication/Administration Errors, Accidental Exposures and Occupational Exposures
.
3.15.1 Medication/administration errors
Medication errors are defined as any preventable event that may cause or lead to inappropriate medication use or patient harm while the medication is in the control of the health care professional, patient or consumer.
Appendix B of the MedDRA Introductory Guide contains descriptions of the interpretation and use of certain medication error terms (e.g., “Dispensing error”).
Reports of medication errors may or may not include information about clinical consequences.
3.15.1.1 Medication errors reported with clinical consequences
If a medication error is reported with clinical consequences, select terms for both the medication error and the clinical consequences.
Example
Reported | LLT Selected |
Patient was administered wrong drug and experienced hypotension |
Wrong drug administered Hypotension |
Because of similar sounding drug names, the patient took the wrong drug and experienced a rash |
Drug name confusion Wrong drug administered Rash |
3.15.1.2 Medication errors and potential medication errors reported without clinical consequences
Medication errors without clinical consequences are not ARs/AEs. However, it is important to record the occurrence or potential occurrence of a medication error. Select a term that is closest to the description of medication error reported.
Also, if specifically reported that no adverse effect has occurred, it is acceptable to select LLT No adverse effect.
In instances where the medication did not reach the patient, it is acceptable to select LLT Drug not taken in context of intercepted medication error.
Example
Reported | LLT Selected | Comment |
Medication was given intravenously instead of intramuscularly |
Intramuscular formulation administered by other route |
|
Medication was given intravenously instead of intramuscularly without sequelae |
Intramuscular formulation administered by other route No adverse effect |
See Section 3.21 |
Patient was dispensed the wrong drug. The error was detected prior to patient administration |
Intercepted drug dispensing error |
|
Pharmacist notices that the names of two drugs are similar and is concerned that this may result in a medication error |
Circumstance or information capable of leading to medication error |
LLT Drug name confusion could be an optional additional term to select (for tracking purposes). Note: this example is a potential medication error |
Drug inadvertently administered. The error was noticed soon afterwards |
Drug administration error |
3.15.1.3 Medication errors in the context of labeled instructions
If the label describes known effects when the product is co-administered with specific drugs, with specific foods, or to patients with specific disease states, then select a medication error term for the type of interaction, such as those listed below:
Medication Error Terms – Labeled Interactions |
Labelled drug-drug interaction medication error Labelled drug-food interaction medication error Labelled drug-disease interaction medication error Documented hypersensitivity to administered drug |
Example
Reported | LLT Selected | Comment |
Patient became pregnant whilst taking an antifungal drug and an oral contraceptive |
Labelled drug-drug interaction medication error Pregnancy on oral contraceptive |
Interaction must be stated in product data sheet (See also Section 3.20) |
Patient drank grapefruit juice whilst taking a calcium channel blocker |
Labelled drug-food interaction medication error |
Product is labeled for grapefruit juice interaction |
Patient with renal failure is prescribed a drug that is contraindicated in renal failure |
Labelled drug-disease interaction medication error |
|
Patient is administered a sulfonamide-based drug |
Documented hypersensitivity to administered drug |
Medical file clearly indicates patient has a sulfa allergy |
3.15.1.4 Do not infer a medication error
Do not infer that a medication error has occurred unless specific information is provided. This includes inferring that extra dosing, overdose, or underdose has occurred. (See Section 3.18)
Example
Reported | LLT Selected | Comment |
Antibiotic was prescribed for a week, and the patient stopped treatment after 2 days because of bitter taste |
Prescribed dosing duration not completed Taste bitter |
LLT Taste bitter represents a sensory perception issue. LLT Medication after taste refers to a product quality issue |
Incorrect dosing by patient | Incorrect dose administered |
Do not select Extra dose administered or Overdose based on this information alone |
Patient took only half the prescribed dose |
Underdose |
3.15.2 Accidental exposures and occupational exposures
3.15.2.1 Accidental exposures
The principles for Section 3.15.1 (Medication/administration errors) also apply to accidental exposures.
Example
Reported | LLT Selected | Comment |
Child accidentally took grandmother’s pills and experienced projectile vomiting | Accidental drug intake by child Vomiting projectile |
|
Father applying topical steroid to his arms accidentally exposed his child to the drug by carrying her | Accidental exposure to product by child Exposure via skin contact |
The “exposure to” term captures the agent of exposure, i.e., a product, and the “exposure via” term captures the route/vehicle of exposure, i.e., skin contact |
3.15.2.2 Occupational exposures
For the purposes of term selection and analysis of MedDRA-coded data, occupational exposure encompasses the “chronic” exposure to an agent (including therapeutic products) during the normal course of one’s occupation, and could include additional scenarios in specific regulatory regions. For example, occupational exposure may additionally relate to a more acute, accidental form of exposure that occurs in the context of one’s occupation. In these regions, occupational exposure for healthcare workers could be of particular interest.
Example
Reported | LLT Selected | Comment |
Physical therapist developed a photosensitivity rash on hands after exposure to an NSAID-containing pain relief cream that she spplied to a patient | Occupational exposure to drug Exposure via skin contact Photosensitive rash |
|
Pathologist chronically exposed to formaldehyde developed nasopharyngeal carcinoma | Occupational exposure to toxic agent Nasopharyngeal carcinoma |
Exposure to formaldehyde is a known risk factor for this type of malignancy |
Nurse splashed injectable drug in her own eye resulting in excessive tearing | Inadvertent exposure to drug
Excess tears |
An additional term for occupational exposure – e.g., LLT Occupational exposure to drug – could also be selected, if applicable to regional requirements |
3.16 – Misuse, Abuse and Addiction
The concepts of misuse, abuse and addiction are closely related and can pose challenges for term selection since the terms may overlap to some extent; the specific circumstances of each case/reported event may help in consideration for term selection of these concepts. Medical judgment and regional regulatory considerations need to be applied.
It may also be useful to consider these concepts as shown in the table below.
Concept | Intentional? | By Whom? | Therapeutic Use? | Additional Sections in this Document |
Misuse | Yes | Patient / Consumer | Yes | 3.16.1 |
Abuse | Yes | Patient / Consumer | No | 3.16.2 |
Addiction | Yes | Patient / Consumer | No | 3.16.3 |
Medication error | No | Patient / Consumer or healthcare provider | Yes | 3.15 |
Off label use | Yes | Healthcare provider | Yes | 3.27 |
3.16.1 Misuse
For the purposes of term selection and analysis of MedDRA-coded data, misuse is the intentional and inappropriate use of a product – over-the-counter or prescription – other than as prescribed or not in accordance with the authorized product information.
Example
Reported | LLT Selected |
Patient deliberately ingested the topical medication | Intentional use by incorrect route |
Patient deliberately took the medication for two days longer than instructed on the product label | Intentional use beyond labeled duration |
3.16.2 Abuse
For the purposes of term selection and analysis of MedDRA-coded data, abuse is the intentional, non-therapeutic use of a product – over-the counter or prescription – for a perceived reward or desired non-therapeutic effect including, but not limited to, “getting high” (euphoria). Abuse may occur with a single use, sporadic use or persistent use of the product.
Example
Reported | LLT Selected |
Athlete used anabolic steroid preparation to enhance performance | Steroid abuse |
Patient occasionally uses opioid product to get high |
Opioid abuse, episodic use |
Patient deliberately ingested the topical medication for its psychoactive effect | Drug abuse Intentional use by incorrect route |
See Section 3.24.1 and 3.24.2 for additional references to "abuse" terms in MedDRA.
3.16.3 Addiction
For the purposes of term selection and analysis of MedDRA-coded data, addiction is an overwhelming desire to take a drug for non-therapeutic purposes together with inability to control or stop its use despite harmful consequences. Addiction can occur because drug induces physical dependence and consequently a withdrawal syndrome, but this is not an essential feature; and addiction can occur because of a desire to experience the drug's psychological, behavioral or physical effects.
Example
Reported | LLT Selected |
Patient became dependent on crack cocaine |
Dependence on cocaine |
Patient became addicted to a deliberately ingested topical medication for its psychoactive effect |
Drug addiction Intentional use by incorrect route |
See Section 3.24.1 for additional references to "addict/addiction" terms in MedDRA.
3.17 – Transmission of Infectious Agent via Product
If a report of transmission of an infectious agent via a product is received, select a term for the transmission. If the infection is identified, select a second term for the specific infection; if appropriate, a product quality issue term can also be selected. (See Section 3.28).
Example
Reported | LLT Selected |
Patient received a nasal spray product and later developed a severe nasal infection with Burkholderia cepacia. Cultures of unopened containers of the nasal spray grew B. cepacia |
Transmission of an infectious agent via product Product contamination bacterial Burkholderia cepacia infection |
Patient received a blood transfusion and developed Hepatitis C |
Transfusion-transmitted infectious disease Hepatitis C |
Medical judgment should be used if the reporter does not explicitly state transmission of an infectious agent via a product but this could be implied by other data within the report. In this instance, select LLT Suspected transmission of an infectious agent via a product.
3.18 – Overdose, Toxicity and Poisoning
Overdose terms are grouped under HLT Overdoses. Toxicity and poisoning terms are grouped under HLT Poisoning and toxicity. For more information, refer to the MedDRA Introductory Guide.
If overdose, poisoning or toxicity is explicitly reported, select the appropriate term.
Example
Reported | LLT Selected | Comment |
Overdose of pills | Overdose | |
A child was accidentally poisoned when she ingested a chemical cleaning product |
Accidental poisoning Chemical poisoning |
|
Patient intentionally took many more than the prescribed number of pills |
Intentional overdose | |
The dose of drug X taken was above the recommended maximum dose in the label |
Drug overdose | |
Nurse inadvertently administered an additional vaccine dose to an already vaccinated child |
Inappropriate dose of vaccine administered | Please note that LLT Inappropriate dose of vaccine administeredis a maladministration term, not specifically an overdose term |
3.18.1 Overdose reported with clinical consequences
Select terms for overdose and for clinical consequences reported in association with an overdose.
Example
Reported | LLT Selected |
Stomach upset from study drug overdose |
Overdose Stomach upset |
3.18.2 Overdose reported without clinical consequences
If an overdose report specifically states that there were no clinical consequences, the preferred option is to select only a term for the overdose. Alternatively, a term for the overdose and the additional LLT No adverse effect can be selected. (See Section 3.21).
Example
Reported | LLT Selected | Preferred Option |
Patient received an overdose of medicine without any adverse consequences |
Overdose | ![]() |
Overdose No adverse effect |
3.19.1 Device-related event reported with clinical consequences
If available, select a term that reflects both the device-related event and the clinical consequence, if so reported.
Example
Reported | LLT Selected |
Patient with a vascular implant developed an infection of the implant |
Vascular implant infection |
Patient noted the prosthesis caused pain | Medical device pain |
If there is no single MedDRA term reflecting the device-related event and the clinical consequence, select separate terms for both.
Example
Reported | LLT Selected |
Ventricular tachycardia due to malfunction of device |
Device malfunction Ventricular tachycardia |
Partial denture fractured leading to tooth pain |
Dental prosthesis breakage Tooth pain |
3.19.2 Device-related event reported without clinical consequences
If a device-related event is reported in the absence of clinical consequences, select the appropriate term.
Example
Reported | LLT Selected |
Medical device breakage | Device breakage |
My patch is leaking on my arm | Leaking patch |
My patch is not sticking to my skin | Medicinal patch adhesion issue |
3.20 – Drug Interactions
This term includes reactions between drugs and other drugs, food, devices and alcohol. In this document, “drug” includes biologic products.
Labeled drug interactions may be medication errors. (See Section 3.15.1.3).
3.20.1 Reporter specifically states an interaction
Select an interaction term and additional term(s) for any reported medical event.
Example
Reported | LLT Selected |
Torsade de pointes with suspected drug interaction |
Drug interaction Torsade de pointes |
Patient drank cranberry juice which interacted with anticoagulant drug causing an INR increase |
Food interaction INR increased |
3.20.2 Reporter does not specifically state an interaction
Two products may be used together, but if the reporter does not specifically state that an interaction has occurred, select terms only for the medical events reported.
Example
Reported | LLT Selected |
Patient was started on an anti-seizure medication and a heart medication and developed syncope |
Syncope |
Patient was already on an anti-seizure medication and was started on a heart medication, and anti-seizure medication levels increased |
Anticonvulsant drug level increased |
3.21 – No Adverse Effect and "Normal" Terms
LLT No adverse effect can be used when absence of an AR/AE is specifically reported, despite exposure to a product. (See Sections 3.15.1.2 and 3.18.2).
Some organizations may want to record LLT No adverse effect for administrative purposes (e.g., pregnancy registries, overdose and medication error reports).
Terms for normal states and outcomes can be used as needed.
Examples of Terms for “Normal” States and Outcomes |
Sinus rhythm Normal baby Normal electrocardiogram |
3.22 – Unexpected Therapeutic Effect
Some organizations may want to record LLT Unexpected therapeutic effect for reports of a beneficial effect of a product apart from the reason it had been given. (Such effects are not usually considered ARs/AEs).
Example
Reported | LLT Selected |
A bald patient was pleased that he grew hair while using a product |
Unexpected therapeutic effect Hair growth increased |
3.23 – Modification of Effect
It is important to record modification of effect (e.g., increased, prolonged) although it is not always an AR/AE.
The preferred option is to select only the “lack of effect” term even if consequences are also reported. However, terms may also be selected for events associated with the lack of effect.
Example
Reported | LLT Selected | Preferred Option |
Patient took drug for a headache, and her headache didn’t go away |
Drug ineffective | ![]() |
Drug ineffective Headache |
||
Antibiotic didn’t work | Lack of drug effect |
3.23.2 Do not infer lack of effect
Example
Reported | LLT Selected | Comment |
AIDS patient taking anti- HIV drug died |
Death | Do not assume lack of effect in this instance. Select only a term for death (See Section 3.2) |
3.23.3 Increased, decreased and prolonged effect
Example
Reported | LLT Selected |
Patient had increased effect from drug A |
Increased drug effect |
Patient had decreased effect from drug A |
Drug effect decreased |
Patient had prolonged effect from drug A |
Drug effect prolonged |
3.24.1 Use of terms in this SOC
Terms in SOC Social circumstances represent social factors and may be suitable to record social and medical history data. Such terms are not generally suitable for recording ARs/AEs; however, in certain instances, terms in SOC Social circumstances are the only available terms for recording ARs/AEs or may add valuable clinical information.
Example
Reported | LLT Selected |
Patient’s ability to drive was impaired | Impaired driving ability |
Terms in SOC Social circumstances are not multi-axial and, unlike terms in other “disorder” SOCs in MedDRA (e.g., SOC Gastrointestinal disorders), they generally refer to a person, not to a medical condition.
Be aware of the impact that terms in SOC Social circumstances may have on data retrieval, analysis and reporting as illustrated in the table below:
Term in SOC Social circumstances (“person”) |
Similar term in “Disorder” SOC (“condition”) |
Alcoholic | Alcoholism |
Drug abuser | Drug abuse |
Drug addict | Drug addiction |
Glue sniffer | Glue sniffing |
Smoker | Nicotine dependence |
Note that “abuse” terms not associated with drugs/substances are in this SOC*, regardless of whether they refer to the person or to the condition, as illustrated in the table below:
LLT | PT |
Child abuse | Child abuse |
Child abuser | |
Elder abuse | Elder abuse |
Elder abuser |
(See Section 3.24.2 concerning illegal/criminal acts).
3.24.2 Illegal acts of crime or abuse
Terms for illegal acts of crime and abuse (excluding those related to drug/substance abuse) are in SOC Social circumstances, such as LLT Physical assault.
LLTs representing the perpetrator are linked to PTs describing the unlawful act committed. PTs representing the victim of unlawful acts generally begin with “Victim of… ”.
Example
Reported | LLT Selected | Comment |
Patient’s history indicates that patient is a known sexual offender |
Sexual offender | Perpetrator; LLT Sexual offender links to PT Sexual abuse in SOC Social circumstances |
Patient was a childhood sexual assault victim |
Childhood sexual assault victim |
Victim; LLT Childhood sexual assault victim links to PT Victim of sexual abuse in SOC Social circumstances |
3.25 – Medical and Social History
Example
Reported | LLT Selected |
History of gastrointestinal bleed and hysterectomy |
Gastrointestinal bleed Hysterectomy |
Patient is a cigarette smoker with coronary artery disease |
Cigarette smoker Coronary artery disease |
3.26 – Indication for Product Use
Indications can be reported as medical conditions, prophylaxis of conditions, replacement therapies, procedures (such as anesthesia induction) and verbatim terms such as “anti-hypertension”. Terms from almost any MedDRA SOC – including SOC Investigations – may be selected to record indications.
Regulatory authorities may have specific requirements for certain aspects of term selection for indications (e.g., for indications within regulated product information). Please refer to the regulatory authority’s specific guidance for such issues.
Example
Reported | LLT Selected |
Hypertension | Hypertension |
Anti-hypertensive | |
Chemotherapy for breast cancer | Breast cancer |
I took it for my cold symptoms | Cold symptoms |
If the only information reported is the type of therapy, select the most specific term.
Example
Reported | LLT Selected |
Patient received chemotherapy | Chemotherapy |
Patient received antibiotics | Antibiotic therapy |
It may not be clear if the reported indication is a medical condition or a desired outcome of therapy. The term selected in either case may be the same.
Example
Reported | LLT Selected | Comment |
Weight loss | Weight loss | Unclear if the purpose is to induce weight loss or to treat an underweight patient |
Immunosuppression | Immunosuppression | Unclear if the purpose is to induce or to treat immunosuppression |
Term selection for some indications (e.g., in regulated product information) may be complex and require selection of more than one LLT to represent the information completely, depending on the circumstances.
Example
Reported | LLT Selected | Comment |
Treatment of aggression in autism | Aggression | The products do not treat the underlying autism, thalassemia, or myocardial infarction, but they do address the associated signs/symptoms (aggression, chronic iron overload, atherothrombosis). It may be necessary to select LLT Autism, LLT Thalassemia major, or LLT Myocardial infarction based on regional regulatory requirements. |
Treatment of chronic iron overload in thalassemia major | Chronic iron overload | |
Prevention of atherothrombotic events in patients with myocardial infarction | Atherothrombosis prophylaxis |
3.26.3 Indications with genetic markers or abnormalities
For indications that describe a genetic marker or abnormality associated with a medical condition, select a term for both the medical condition and the genetic marker or abnormality.
Example
Reported | LLT Selected |
Non small cell lung cancer with K-ras mutation |
Non-small cell lung cancer K-ras gene mutation |
3.26.4 Prevention and prophylaxis
When an indication for prevention or prophylaxis is reported, select the specific MedDRA term, if it exists. (Note: the words “prevention” and “prophylaxis” are synonymous in the context of MedDRA).
Example
Reported | LLT Selected |
Prophylaxis of arrhythmia | Arrhythmia prophylaxis |
Prevention of migraine | Migraine prophylaxis |
If there is no MedDRA term containing “prevention” or “prophylaxis”, choose one of the following options (Note: the preferred option is to select a general prevention/ prophylaxis term and a term for the condition):
Example
Reported | LLT Selected | Preferred Option |
Comment |
Prevention of hepatotoxicity |
Prevention Hepatotoxicity |
![]() |
Select the closest term for both concepts |
Hepatotoxicity | Select a term for the condition |
||
Prevention | Select the closest prevention/prophylaxis term |
3.26.5 Procedures and diagnostic tests as indications
Select the appropriate term if the product is indicated for performing a procedure or a diagnostic test.
Example
Reported | LLT Selected |
Induction of anesthesia | Induction of anesthesia |
Contrast agent for angiogram | Angiogram |
Contrast agent for coronary angiogram | Coronary angiogram |
3.26.6 Supplementation and replacement therapies
Terms for supplemental and replacement therapies are in SOC Surgical and medical procedures. (See Section 3.13). If the product indication is for supplementation or replacement therapy, select the closest term.
Example
Reported | LLT Selected |
Testosterone replacement therapy | Androgen replacement therapy |
Prenatal vitamin | Vitamin supplementation |
3.26.7 Indication not reported
If clarification cannot be obtained, select LLT Drug use for unknown indication.
Example
Reported | LLT Selected |
Aspirin was taken for an unknown indication |
Drug use for unknown indication |
3.27 – Off Label Use
The concept of “off label use” relates to situations where the product is intentionally used for a medical purpose not in accordance with the authorized product information.
3.27.1 Off label use when reported as an indication
If a medical condition is reported as an indication along with “off label use”, the preferred option is to select terms for the medical condition and LLT Off label use or other appropriate LLTs linked to PT Off label use. Alternatively, select a term for the medical condition/indication alone. Select LLT Off label use alone only if it is the only information available.
Example
Reported | LLT Selected | Preferred Option |
Hypertension; this is off label use |
Off label use Hypertension |
![]() |
Hypertension |
Example
Reported | LLT Selected | Comment |
Used off label | Off label use | |
Off label use in paediatric patients | Drug use in unapproved population | Refers to a population of patients |
Drug X given to a 10 year old boy; the drug is not indicated for use below 18 years | Adult product administered to child | LLT Adult product administered to child is linked to PT Off label use |
3.27.2 Off label use when reported with AR/AE
If an AR/AE occurs as a result of off label use, the preferred option is to select LLT Off label use, or other appropriate LLTs linked to PT Off label use, and a term for the medical condition in addition to a term for the AR/AE. Alternatively, select a term for the medical condition and a term for the AR/AE.
Example
Reported | LLT Selected | Preferred Option |
Patient was administered a drug off label for pulmonary hypertension and suffered a stroke | Off label use Stroke Pulmonary hypertension |
![]() |
Stroke Pulmonary hypertension |
It is important to recognize product quality issues as they may have implications for patient safety. They may be reported in the context of adverse events or as part of a product quality monitoring system.
Product quality issues are defined as abnormalities that may be introduced during the manufacturing/labeling, packaging, shipping, handling or storage of the products. They may occur with or without clinical consequences. Such concepts may pose a challenge for term selection.
Familiarity with HLGT Product quality issues (in SOC General disorders and administration site conditions) is essential for term selection. Under this HLGT are categories of specific product quality issues such as HLT Product packaging issues, Product physical issues, etc. Navigating down to the appropriate LLTs from the MedDRA hierarchy is the optimal approach for term selection.
Explanations of the interpretations and uses of certain product quality issue terms (e.g., “Product coating incomplete”) are found in the MedDRA Introductory Guide (Appendix B, MedDRA Concept Descriptions).
3.28.1 Product quality issue reported with clinical consequences
If a product quality issue results in clinical consequences, term(s) for the product quality issue and the clinical consequences should be selected.
Example
Reported | LLT Selected |
New bottle of drug tablets have unusual chemical smell that made me nauseous |
Product odor abnormal Nauseous |
I switched from one brand to another of my blood pressure medication, and I developed smelly breath |
Product substitution issue brand to brand Smelly breath |
Consumer noted that the toothpaste they had purchased had a mouldy odour Subsequent investigation of the product lot number revealed that the toothpaste was a counterfeit product | Product counterfeit Product odour abnormal |
3.28.2 Product quality issue reported without clinical consequences
It is important to capture the occurrence of product quality issues even in the absence of clinical consequences.
Example
Reported | LLT Selected |
Sterile lumbar puncture kit received in broken packaging (sterility compromised) |
Product sterile packaging disrupted |
3.28.3 Product quality issue vs. medication error
It is important to distinguish between a product quality issue and a medication error.
Product quality issues are defined as abnormalities that may be introduced during the manufacturing/labeling, packaging, shipping, handling or storage of the products. They may occur with or without clinical consequences.
Medication errors are defined as any preventable event that may cause or lead to inappropriate medication use or patient harm while the medication is in the control of the health care professional, patient or consumer.
Explanations of the interpretations of product quality issue terms are found in the MedDRA Introductory Guide (Appendix B, MedDRA Concept Descriptions).
Example
Reported | LLT Selected | Comment |
Pharmacist dispensing Drug A inadvertently attached a product label for Drug B |
Wrong label placed on medication during dispensing |
Medication error |
The drug store clerk noted that the wrong product label was attached to some bottles in a shipment of mouthwash |
Product label on wrong product |
Product quality issue |
The mother administered insufficient amount of prescribed antibiotic because the lines on the dropper were hard to read |
Product dropper calibration unreadable Insufficient dosage |
Product quality issue and medication error |
4.1.1 – Versioning methodologies
Each organization should have a versioning strategy that should be documented. The versioning strategy may differ between safety databases and clinical trial databases. For example, there may be no need to update clinical trial data from older trials if the data are not presently used or will not be used in the future. On the other hand, postmarketing safety data may be required to be reported in the current (or near-current) version of MedDRA, and version update recommendations then apply.
Users should choose the most optimal approach based on their organization’s characteristics. The optional methods described below can be used to document the extent to which an organization has applied a new version of MedDRA. These methods should not be interpreted as regulatory requirements but may be used to communicate effectively between and within organizations.
The table below summarizes the types of versioning methods.
Method | Description | Resource Intensity |
Data Accuracy |
1 | Begin to use new version for coding new data; no recoding of existing data |
Least | Least |
2 | Identify verbatim terms linked to non-current LLTs and recode existing data |
![]() |
![]() |
3 | Identify verbatim terms linked to non-current LLTs and recode existing data and Recode verbatim terms to new LLTs that are direct or lexical matches |
||
4 | Identify verbatim terms linked to non-current LLTs and recode existing data and Recode verbatim terms to new LLTs that are direct or lexical matches and Recode verbatim terms to new LLTs that are more accurate concepts |
Most | Most |
This list may not be inclusive; other versioning methods may be used. Depending on how MedDRA data are stored in the database, additional steps may be needed to ensure consistency in data retrieval and reporting, including medical review of the data after the version method has been applied.
Note that Method 4 is the most resource intense and Method 1 is the least. There are additional points to consider: recoding to LLTs that are new direct matches or more accurate concepts (Method 4) provides the most accurate data compared to the other methods.
The MSSO and JMO provide tools to assist the user in comparing the changes between MedDRA versions. The Version Report (provided by the MSSO and JMO) is a spreadsheet listing all changes between the current version of MedDRA and the one previous to it; this spreadsheet is provided with each new release of MedDRA. The MSSO also provides the MedDRA Version Analysis Tool (MVAT) that facilitates identification and understanding of the impact of changes between any two MedDRA versions, including non-consecutive ones. (See Appendix, Section 4.2.)
4.1.2 – Timing of version implementation
For single case reporting, the sender and receiver of the data need to be in synchrony regarding MedDRA versions. There are MSSO recommendations for the timing of the implementation of a new MedDRA release for both individual case safety reporting and clinical trial data. Specific transition dates for single case reporting for the next MedDRA versions are provided. (See Appendix, Section 4.2).
Date of New Reporting Version for Individual Case Safety Reporting |
A new release version of MedDRA should become the reporting version on the first Monday of the second month after it is released. To synchronize this event over the three ICH regions, the MSSO recommends midnight GMT, Sunday to Monday, for the switchover. For example : •1 March – MedDRA X.0 released •First Monday of May – MedDRA X.0 becomes the reporting version •1 September – MedDRA X.1 released •First Monday of November – MedDRA X.1 becomes the reporting version |
The following documents and tools can be found on the MedDRA website (www.meddra.org):
MedDRA Introductory Guide
MedDRA Change Request Information document
MedDRA Web-based Browser
MedDRA Desktop Browser
MedDRA Version Report (lists all changes in new version) *
MedDRA Version Analysis Tool (compares any two versions) *
MSSO's Recommendations for Single Case Reporting
MSSO's Recommendations for Clinical Trial Versioning
Transition Date for the Next MedDRA Version
* Requires user ID and password to access
4.3 Membership of the ICH Points to Consider Working Group
4.3.1 Current members of the ICH Points to Consider Working Group
Affiliation | Member |
Commission of the European Communities |
Sarah Vaughan |
Maria Luisa Casini | |
European Federation of Pharmaceutical Industries Associations |
Hilary Vass* |
Christina Winter† | |
Health Canada | Alison Bennett |
Lynn Macdonald | |
Japanese Maintenance Organization | Yutuka Nagao |
Kazuyuki Sekiguchi | |
Reiji Tezuka | |
Japan Pharmaceutical Manufacturers Association |
Yo Tanaka |
MedDRA MSSO | Judy Harrison |
Ministry of Health, Labour
and Welfare/Pharmaceuticals and Medical Devices Agency |
Sonoko Ishihara |
Makiko Isozaki | |
Yuuhei Fukuta | |
Pharmaceutical Research and Manufacturers of America |
Anna-Lisa Kleckner |
JoAnn Medbery | |
US Food and Drug Administration | Sonja Brajovic |
Christopher Breder |
* Current Rapporteur
† Former Rapporteur
4.3.2 – Former members of the ICH Points to Consider Working Group
Affiliation | Member |
Commission of the European Communities |
Dolores Montero |
Carmen Kreft-Jais | |
Morell David | |
European Federation of Pharmaceutical Industries Associations |
Barry Hammond†; Reinhard Fescharek† |
Health Canada | Heather Morrison; Michelle Séguin; Heather Sutcliffe; Bill Wilson |
Japanese Maintenance Organization | Osamu Handa; Akemi Ishikawa; Yasuo Sakurai; Yuki Tada |
Japan Pharmaceutical Manufacturers Association |
Takayoshi Ichikawa; Akemi Ishikawa; Satoru Mori; Yasuo Sakurai; Kunikazu Yokoi |
MedDRA MSSO | JoAnn Medbery; Patricia Mozzicato |
Ministry of Health, Labour and Welfare/Pharmaceuticals and Medical Devices Agency |
Tamaki Fushimi; Wakako Horiki; Kazuhiro Kemmotsu; Tatsuo Kishi; Chie Kojima; Emiko Kondo; Hideyuki Kondou; Kemji Kuramochi; Tetsuya Kusakabe; Kaori Nomura; Izumi Oba; Shinichi Okamura; Yoshihiko Sano; Nogusa Takahara; Kenichi Tamiya; Daisuke Tanaka; Shinichi Watanabe; Takashi Yasukawa; Go Yamamoto; Manabu Yamamoto; Nobuhiro Yamamoto |
Pharmaceutical Research and Manufacturers of America |
David Goldsmith; Sidney Kahn; Susan M. Lorenski; Margaret M. Westland† |
US Food and Drug Administration | Miles Braun; Andrea Feight; John (Jake) Kelsey†; Brad Leissa; Toni Piazza-Hepp |
† Former Rapporteur