This case-sensitive code system http://hl7.org/fhir/us/davinci-deqm/CodeSystem/gaps-status defines the following codes:
Code
Display
Definition
open-gap
Open Gap
A discrepancy exists between recommended best practices and the services that are actually provided and documented.
closed-gap
Closed Gap
No discrepancy exists between recommended best practices and the services that are actually provided and documented. A previously identified open gap may become closed, if actions were taken to close the open gaps.
not-applicable
Not Applicable
The patient does not meet the initial population criteria for the measure.