This is the CodeSystem that contains all the codes in Thumbnail status (http://ehealth.sundhed.dk/cs/thumbnail-status) and Thumbnail status (http://ehealth.sundhed.dk/cs/thumbnail-status). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: Kodesystem 668329cf-1a11-4d0b-90d4-3bdb73b6123e-233
This  code system http://hl7.org/fhir/comparison/CodeSystem/668329cf-1a11-4d0b-90d4-3bdb73b6123e-233 defines codes, but no codes are represented here