Union of http://fdasis.nlm.nih.gov and http://fdasis.nlm.nih.gov

This is the CodeSystem that contains all the codes in Unique Ingredient Identifier (UNII) (http://fdasis.nlm.nih.gov) and Unique Ingredient Identifier (UNII) (http://fdasis.nlm.nih.gov). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem c9ad2e8a-05d1-4fde-9d98-460e1ab4dcf1-503

This code system http://hl7.org/fhir/comparison/CodeSystem/c9ad2e8a-05d1-4fde-9d98-460e1ab4dcf1-503 defines codes, but no codes are represented here

Code