Union of http://hl7.org/fhir/us/core/ValueSet/us-core-medication-codes and http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1010.4

This is the ValueSet that contains all the codes in US Core Medication Codes (RxNorm) (http://hl7.org/fhir/us/core/ValueSet/us-core-medication-codes) and Medication Clinical Drug (http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1010.4). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: ValueSet 2b0f44f0-d000-4150-a419-46a9015ab3ab-236

This value set includes codes based on the following rules: