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 c51c7c25-f5f4-429e-b1c8-849e59890f2d-678
This code system http://hl7.org/fhir/comparison/CodeSystem/c51c7c25-f5f4-429e-b1c8-849e59890f2d-678 defines codes, but no codes are represented here