This is the ValueSet that contains all the codes in Observation Methods (http://hl7.org/fhir/ValueSet/observation-methods) and Observation Methods (http://hl7.org/fhir/ValueSet/observation-methods). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: ValueSet 4e67bc4b-7ea1-40bb-a6a2-1b37ad00d5ea-20
This value set includes codes based on the following rules: