This is the CodeSystem that contains codes in both ChargeItemCode (http://terminology.hl7.org/CodeSystem/chargeitem-billingcodes) and ChargeItemCode (http://terminology.hl7.org/CodeSystem/chargeitem-billingcodes).
Generated Narrative: CodeSystem 0ec45ba7-314b-4ba9-9b81-235149b7c77a-144
This code system http://hl7.org/fhir/comparison/CodeSystem/0ec45ba7-314b-4ba9-9b81-235149b7c77a-144 defines codes, but no codes are represented here