Union of https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/HospitalAcqCond/Coding and https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/HospitalAcqCond/Coding

This is the CodeSystem that contains all the codes in CMS Present on Admission (POA) Indicator (https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/HospitalAcqCond/Coding) and CMS Present on Admission (POA) Indicator (https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/HospitalAcqCond/Coding). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem 974a4042-5ef9-4d87-bcaa-92de671fa085-665

This code system http://hl7.org/fhir/comparison/CodeSystem/974a4042-5ef9-4d87-bcaa-92de671fa085-665 defines codes, but no codes are represented here

CodeDefinition
Y Diagnosis was present at time of inpatient admission.
N Diagnosis was not present at time of inpatient admission.
U Documentation insufficient to determine if the condition was present at the time of inpatient admission.
W Clinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.
1 Unreported/Not used. Exempt from POA reporting. This code is equivalent to a blank on the UB-04, however; it was determined that blanks are undesirable when submitting this data via the 4010A.