MedDRA (Medical Dictionary for Regulatory Activities) is the global, standardized medical terminology used for coding adverse events, indications and medical history in pharmacovigilance, clinical trials and regulatory submissions. Standardised MedDRA Queries (SMQs) are validated, pre-defined groupings of MedDRA terms that help detect and retrieve cases related to specific safety topics across datasets. For B.Pharm students, mastering MedDRA hierarchy (SOC, HLGT, HLT, PT, LLT), coding conventions, versioning, and SMQ types (narrow, broad, algorithmic) is vital for accurate signal detection, case identification and regulatory reporting. This introduction emphasizes practical use, common pitfalls, and application in drug safety. Now let’s test your knowledge with 30 MCQs on this topic.
Q1. What is the primary purpose of MedDRA?
- To provide standardized drug manufacturing procedures
- To code and standardize medical information such as adverse events and indications
- To replace ICD codes for hospital billing
- To regulate pharmaceutical marketing activities
Correct Answer: To code and standardize medical information such as adverse events and indications
Q2. Which organization is responsible for the distribution and maintenance of MedDRA?
- World Health Organization (WHO)
- FDA (Food and Drug Administration)
- MedDRA Maintenance and Support Services Organization (MSSO)
- European Medicines Agency (EMA)
Correct Answer: MedDRA Maintenance and Support Services Organization (MSSO)
Q3. Which of the following correctly lists the MedDRA hierarchy from highest to lowest level?
- LLT > PT > HLT > HLGT > SOC
- SOC > HLGT > HLT > PT > LLT
- PT > SOC > LLT > HLT > HLGT
- HLT > SOC > PT > LLT > HLGT
Correct Answer: SOC > HLGT > HLT > PT > LLT
Q4. What does PT stand for in MedDRA?
- Primary Term
- Preferred Term
- Pharmacovigilance Term
- Patient Term
Correct Answer: Preferred Term
Q5. Which MedDRA level contains the most specific reported terms used by coders?
- SOC
- HLGT
- PT
- LLT
Correct Answer: LLT
Q6. What is an SMQ?
- A coding rule for selecting LLTs in case reports
- A list of marketed drugs associated with a safety issue
- A standardized grouping of MedDRA terms to identify cases related to a safety topic
- A training manual for MedDRA coders
Correct Answer: A standardized grouping of MedDRA terms to identify cases related to a safety topic
Q7. Which SMQ type provides high specificity but may have lower sensitivity?
- Broad SMQ
- Narrow SMQ
- Algorithmic SMQ
- Exploratory SMQ
Correct Answer: Narrow SMQ
Q8. What is a characteristic of a Broad SMQ?
- Contains only diagnostic codes confirmed by lab tests
- Maximizes sensitivity by including many related terms
- Includes only the most specific preferred terms
- Is used exclusively for regulatory submissions
Correct Answer: Maximizes sensitivity by including many related terms
Q9. How often is MedDRA typically updated with new versions?
- Once every five years
- Twice a year
- Monthly
- Only when major safety events occur
Correct Answer: Twice a year
Q10. Which statement about SMQs is TRUE?
- SMQs replace the need for manual case review
- SMQs are validated and help with case retrieval but usually require clinical review
- SMQs are only relevant for pre-marketing clinical trials
- SMQs are lists of drug names linked to adverse events
Correct Answer: SMQs are validated and help with case retrieval but usually require clinical review
Q11. What does LLT represent in the MedDRA hierarchy?
- Lowest Level Term, the most specific term including synonyms or verbatim reported terms
- Latest Linked Term used for regulatory mapping
- Laboratory Linked Term used for lab results
- Logical List Term grouping PTs
Correct Answer: Lowest Level Term, the most specific term including synonyms or verbatim reported terms
Q12. When coding an adverse event verbatim reported as “sudden loss of smell,” which MedDRA level should a coder ideally map to?
- HLGT
- PT that best matches the clinical concept (e.g., anosmia)
- SOC only
- LLT but not PT
Correct Answer: PT that best matches the clinical concept (e.g., anosmia)
Q13. Which of the following best describes an algorithmic SMQ?
- An SMQ that uses complex combinations of terms and logical rules to identify cases
- An SMQ that is only for pediatric safety issues
- An SMQ that lists drug–drug interaction pairs
- An SMQ that is deprecated and no longer used
Correct Answer: An SMQ that uses complex combinations of terms and logical rules to identify cases
Q14. In pharmacovigilance, why is version control of MedDRA important?
- Because it affects the color coding of reports
- Because changes in terms or hierarchy can affect case retrieval and longitudinal analyses
- Because older versions are not readable by modern software
- Because each version has different legal status
Correct Answer: Because changes in terms or hierarchy can affect case retrieval and longitudinal analyses
Q15. Who typically uses SMQs in a pharmaceutical company?
- Pharmacovigilance professionals and safety physicians for signal detection
- Only the marketing department
- Manufacturing quality control staff
- Legal counsel for patent disputes
Correct Answer: Pharmacovigilance professionals and safety physicians for signal detection
Q16. What is the main difference between PT and LLT?
- PT is more specific than LLT
- LLT is a synonym or variant that maps to a PT; PT is the standard clinical descriptor
- PT contains local language only while LLT is English-only
- LLT is used only for laboratory results
Correct Answer: LLT is a synonym or variant that maps to a PT; PT is the standard clinical descriptor
Q17. Which SOC would most likely contain terms for “hepatitis” and “liver injury”?
- Cardiac disorders
- Hepatobiliary disorders
- Respiratory disorders
- Psychiatric disorders
Correct Answer: Hepatobiliary disorders
Q18. When performing a signal detection exercise, how should SMQs be used?
- As a starting point to retrieve potentially relevant cases, followed by clinical review
- As the sole evidence to declare a safety signal without further evaluation
- Only to exclude cases from analysis
- Only for labeling changes, not for signal detection
Correct Answer: As a starting point to retrieve potentially relevant cases, followed by clinical review
Q19. What does HLGT stand for in MedDRA?
- High Level Group Term
- High Level Generic Term
- Hierarchical Linked Global Term
- Host-Level Grouped Term
Correct Answer: High Level Group Term
Q20. Which of the following is a potential pitfall when using SMQs?
- Assuming an SMQ retrieves only confirmed cases without manual review
- Using SMQs increases sensitivity so no false negatives occur
- SMQs automatically update patient records
- SMQs eliminate the need for coding accuracy
Correct Answer: Assuming an SMQ retrieves only confirmed cases without manual review
Q21. For international safety reporting, why is MedDRA preferred over local free-text terms?
- MedDRA prevents reporting of rare events
- MedDRA standardizes terminology across languages and databases facilitating consistent analysis
- Local free-text is always more accurate than MedDRA
- Because MedDRA is cheaper to implement
Correct Answer: MedDRA standardizes terminology across languages and databases facilitating consistent analysis
Q22. Which level groups related PTs and sits directly above PT in the hierarchy?
- LLT
- HLT
- SOC
- HLGT
Correct Answer: HLT
Q23. When an SMQ contains both narrow and broad term sets, how are they typically interpreted?
- Narrow set is for exploratory analysis and broad set for confirmatory diagnosis
- Narrow set prioritizes specificity; broad set increases sensitivity and may capture related but less specific terms
- Broad set is a subset of narrow set
- Narrow set is always ignored in regulatory reports
Correct Answer: Narrow set prioritizes specificity; broad set increases sensitivity and may capture related but less specific terms
Q24. In MedDRA coding guidelines, which principle should guide selection of a PT?
- Always pick the first PT alphabetically
- Select the PT that best reflects the reported clinical concept
- Use SOC-level coding only for all events
- Map every report to multiple PTs regardless of relevance
Correct Answer: Select the PT that best reflects the reported clinical concept
Q25. Which of these is a legitimate use of SMQs in pharmacovigilance?
- To audit manufacturing batch records
- To efficiently retrieve potential cases of a specific condition for review
- To calculate drug pricing
- To write clinical trial consent forms
Correct Answer: To efficiently retrieve potential cases of a specific condition for review
Q26. How are newer medical concepts incorporated into MedDRA?
- They cannot be added once the dictionary is released
- Through periodic updates and new versions released by MSSO, often semi-annually
- Only by national regulatory agencies, not MSSO
- They are added directly to SMQs but not to MedDRA
Correct Answer: Through periodic updates and new versions released by MSSO, often semi-annually
Q27. Which of the following best describes a clinical review after SMQ retrieval?
- Automatic confirmation of cases by software
- Expert evaluation of retrieved cases to confirm relevance, exclude false positives and assess causality
- Deletion of all broad SMQ cases without assessment
- Conversion of PTs to LLTs only
Correct Answer: Expert evaluation of retrieved cases to confirm relevance, exclude false positives and assess causality
Q28. What is an example of misuse of MedDRA in analysis?
- Using consistent MedDRA versions across datasets when comparing rates
- Mixing different MedDRA versions without mapping or reconciliation during longitudinal analyses
- Applying SMQs followed by clinical review
- Documenting coding decisions and rationale
Correct Answer: Mixing different MedDRA versions without mapping or reconciliation during longitudinal analyses
Q29. Which MedDRA level would you use to compile broad statistics across organ systems?
- SOC (System Organ Class)
- PT (Preferred Term)
- LLT (Lowest Level Term)
- HLT (High Level Term)
Correct Answer: SOC (System Organ Class)
Q30. If an SMQ yields many cases with low specificity, what is an appropriate next step?
- Report all cases as confirmed without further checks
- Perform targeted clinical review, apply exclusion criteria, and consider using narrow SMQ or additional filters
- Delete the SMQ and never use it again
- Assume the signal is true and immediately change the product label
Correct Answer: Perform targeted clinical review, apply exclusion criteria, and consider using narrow SMQ or additional filters
