Union of http://hl7.org/fhir/ValueSet/ucum-vitals-common and http://phinvads.cdc.gov/fhir/ValueSet/2.16.840.1.113883.10.14.1.1.13.9

This is the ValueSet that contains all the codes in Vital Signs Units (http://hl7.org/fhir/ValueSet/ucum-vitals-common) and Type of Recreational Drug (HL7) (http://phinvads.cdc.gov/fhir/ValueSet/2.16.840.1.113883.10.14.1.1.13.9). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem