This is the CodeSystem that contains all the codes in ChargeItemCode (http://terminology.hl7.org/CodeSystem/chargeitem-billingcodes) and ChargeItemCode (http://terminology.hl7.org/CodeSystem/chargeitem-billingcodes). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem ce29e8c3-bf6b-4db3-8fa6-fd314711d268-143
This code system http://hl7.org/fhir/comparison/CodeSystem/ce29e8c3-bf6b-4db3-8fa6-fd314711d268-143 defines codes, but no codes are represented here