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["Medication, Order": "Aromatase Inhibitors"]

Performance/Reporting Period
Value Set Description from VSAC
Clinical Focus: This value set contains concepts that represent aromatase inhibitor medications.
Data Element Scope: This value set may use the Quality Data Model (QDM) datatype related to Medication, Active or Medication, Ordered.
Inclusion Criteria: Includes only relevant concepts associated with semantic clinical drugs (concepts associated with component, form and strength); generic; prescribable; both steroidal and non-steroidal inhibitors; both non-selective and selective inhibitors; aromatase inhibitors only.
Exclusion Criteria: Excludes branded drugs; components or ingredients only; non-prescribable; aromatase inhibitors in combination with other medications; selective inhibitors vorozole, formestane, and fadrozole.

Constrained to codes in the Medication, Order: Aromatase Inhibitors value set (2.16.840.1.113883.3.464.1003.196.12.1265)

QDM Datatype and Definition (QDM Version 5.5 Guidance Update)

"Medication, Order"

Data elements that meet criteria using this datatype should document a request to a pharmacy to provide the medication indicated by the QDM category and its corresponding value set.


  • relevantPeriod addresses the time referenced in the dosage instruction indicating when the medication administration should start and end.
  • In the initial publication of QDM 5.5, relevantPeriod referenced the validity period, i.e., the time period for which the ordered supply is authorized by the prescription authorizing the dispensing event.
  • For clarification, see Appendix 6.4 with additional guidance for referencing relevantPeriod updating the definition for Medication, Order, "Medication Dispensed", and "Substance, Order".
  • author dateTime references the date and time the medication order (prescription) or the reason for not ordering the medication (i.e., negationRationale) is authored.


  • When calculating cumulative medication duration, the stopTime may be present directly in the medication order. If the stopTime is not available, the duration in days is the difference between the relevantPeriod start and stop times multiplied by (1 + the number of refills).
  • negation rationale indicates a one-time documentation of a reason an activity is not performed. Negation of QDM datatype-related actions for a reason always use the author dateTime attribute to reference timing and must not use relevantPeriod.

Refer to Special Cases in Appendix A (Section 5.7) for scenarios to consider in calculating cumulative medication duration.

Last Updated: Jul 08, 2021