This is the CodeSystem that contains all the codes in Billing Codes (https://nrces.in/ndhm/fhir/r4/CodeSystem/ndhm-billing-codes) and Billing Code (https://nrces.in/ndhm/fhir/r4/CodeSystem/ndhm-billing-codes). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 164c7b66-b44f-4547-b738-f0730543f06c-5
This code system http://hl7.org/fhir/comparison/CodeSystem/164c7b66-b44f-4547-b738-f0730543f06c-5
defines codes, but no codes are represented here