This page is part of the Quality Measure STU2 for FHIR R4 Implementation Guide (v2.0.0: STU 2) based on FHIR R4. The current version which supercedes this version is 3.0.0. For a full list of available versions, see the Directory of published versions 
CodeSystem: aggregate-method
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This code system http://hl7.org/fhir/us/cqfmeasures/CodeSystem/aggregate-method defines the following codes:
| Code | Display | Definition |
| sum | Sum | The measure score is determined by adding together the observations derived from the measure population. |
| average | Average | The measure score is determined by taking the average of the observations derived from the measure population. |
| median | Median | The measure score is determined by taking the median of the observations derived from the measure population. |
| minimum | Minimum | The measure score is determined by taking the minimum of the observations derived from the measure population. |
| maximum | Maximum | The measure score is determined by taking the maximum of the observations derived from the measure population. |
| count | Count | The measure score is determined as the number of observations derived from the measure population. |