Note: US-Core defines precise profiles for specific observations, as well as a general profile for LOINC-code laboratory result observations. QI-Core inherits these specific profiles directly. When creating expressions for eCQMs or CDS artifacts with QI-Core for the following clinical data, use the applicable profile directly rather than the generic QICore Observation profile:

• FHIR Vital Signs Profile
• Pediatric-BMI-for Age
• Pediatric Head Occipital-frontal Circumference Percentile
• Pediatric Weight for Height
• Pulse Oximetry
• Smoking Status
• Laboratory Result

To create an expression specifically requesting information that an observation intentionally did not occur for a medical, patient or system reason, use the profile QICore-observationnotdone.

The Observation and ObservationNotDone profiles represent the positive and negative statements for an observation. To ensure instances retrieved meet positive intent, applications should check the status element as illustrated in this example:

define Observation:
  [Observation] O
    where O.status in { 'registered', 'preliminary', 'final', 'amended', 'corrected' }

The following example illustrates the use of the observation profile.

define "Pap Test with Results":
	[Observation: "Pap Test"] PapTest
		where PapTest.value is not null
			and PapTest.status in { 'final', 'amended', 'corrected', 'preliminary' }

See the patterns page for implementation and usage patterns.

Examples