HL7 Terminology (THO)
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This page is part of the HL7 Terminology (v6.0.1: Release) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: Measure Population Type

Official URL: http://terminology.hl7.org/CodeSystem/measure-population Version: 2.0.0
Active as of 2020-04-09 Maturity Level: 4 Responsible: Health Level Seven International Computable Name: MeasurePopulationType
Other Identifiers: OID:2.16.840.1.113883.4.642.1.1231

Copyright/Legal: This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html

The type of population.

This Code system is referenced in the content logical definition of the following value sets:

Generated Narrative: CodeSystem measure-population

Last updated: 2020-04-09 21:10:28+0000

This case-sensitive code system http://terminology.hl7.org/CodeSystem/measure-population defines the following codes:

CodeDisplayDefinition
initial-population Initial Population

The initial population criteria refers to all patients, subjects, or events to be evaluated by a quality measure involving patients or subjects who share a common set of specified characterstics. All patients, subjects, or events counted (for example, as numerator, as denominator) are drawn from the initial population.

numerator Numerator

The numerator inclusion statement describes the process, condition, event, or outcome that satisfies the measure’s focus or intent. The numerator inclusion statement includes parameters such as:

  • the Event or events that will satisfy the numerator inclusion criteria
  • the Performance period or time interval in which the numerator event must occur, if it is different from that used for identifying the denominator.

Note that this code is used to identify the starting inclusion criteria for the numerator. The final calculated numerator must be determined by considering all relevant criteria for the scoring type, including numerator inclusion and exclusion criteria.

Source: https://mmshub.cms.gov/measure-lifecycle/measure-specification/develop-specification/numerator

numerator-exclusion Numerator Exclusion

Numerator exclusion criteria define patients, subjects, or events to be excluded from the numerator. Numerator exclusions are used in proportion and ratio measures to help narrow the numerator (for inverted measures).

denominator Denominator

Denominator inclusion criteria define the patients, subjects, or events that should be included in the lower portion of a fraction used to calculate a rate, proportion, or ratio.

Note that this code is used to identify the starting inclusion criteria for the denominator. The final calculated denominator must be determined by considering all relevant criteria for the scoring type, including denominator inclusion, exclusion, and exception criteria. The final calculated denominator can be the same as the initial population, or a subset of the initial population to further constrain the population for the purpose of the measure.

denominator-exclusion Denominator Exclusion

Denominator exclusion criteria define patients, subjects, or events that should be excluded from the denominator. Denominator exclusions are used in proportion and ratio measures to help narrow the denominator. For example, patients with bilateral lower extremity amputations would be listed as a denominator exclusion for a measure requiring foot exams.

denominator-exception Denominator Exception

Denominator exceptions are conditions that should remove a patient, subject, or event from the denominator of a measure only if the numerator criteria are not met. Denominator exception allows for adjustment of the calculated score for those providers with higher risk populations. Denominator exception criteria are only used in proportion measures.

measure-population Measure Population

Measure population inclusion criteria define the patients, subjects, or events for which the measure observation should be taken. Measure populations are used for continuous variable measures rather than numerator and denominator criteria.

Note that this code is used to identify the starting inclusion criteria for the measure population. The final calculated measure population must be determined by considering all relevant criteria for the scoring type, including measure population inclusion and exclusion criteria.

measure-population-exclusion Measure Population Exclusion

Measure population exclusion criteria define the patients or events that should be excluded from the measure population before determining the outcome of one or more continuous variables defined for the measure observation. Measure population exclusion criteria are used within continuous variable measures to help narrow the measure population.

measure-observation Measure Observation

Measure observation criteria are used to define an individual observation to be performed for each patient, subject, or event in the measure population. Measure observations for each case in the population are aggregated to determine the overall measure score for the population.


History

DateActionAuthorCustodianComment
2024-07-12reviseBryn RhodesCQIClarify measure population type terms; up-571
2023-11-14reviseMarc DuteauTSMGAdd standard copyright and contact to internal content; up-476
2023-11-09reviseAbdullah RafiqiCQIUpdate numerator definition in MeasurePopulationType code system; up-480
2020-10-14reviseGrahame GrieveVocabulary WGReset Version after migration to UTG
2020-10-14reviseBryn RhodesClinical Quality Information WGClarify inclusion nature of population criteria in Measure and MeasureReport ticket UP-68
2020-05-06reviseTed KleinVocabulary WGMigrated to the UTG maintenance environment and publishing tooling.