Union of https://www.cdc.gov/vaccines/hcp/vis/index.html and https://www.cdc.gov/vaccines/hcp/vis/index.html

This is the CodeSystem that contains all the codes in Vaccine Information Statements (VIS) (https://www.cdc.gov/vaccines/hcp/vis/index.html) and Vaccine Information Statements (VIS) (https://www.cdc.gov/vaccines/hcp/vis/index.html). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem d90c6776-070a-4707-b535-0a35f2e2298a-83

This code system http://hl7.org/fhir/comparison/CodeSystem/d90c6776-070a-4707-b535-0a35f2e2298a-83 defines codes, but no codes are represented here

Code