Monitor observation status to make sure new codes are being used.
D019090:Case Management; D014487:Centers for Medicare and Medicaid Services, U.S.; D039702:Current Procedural Terminology; D004282:Documentation / Q000145:classification*; D004636:Emergency Service, Hospital / Q000191:economics; D005568:Forms and Records Control / Q000145:classification*; D017408:Guidelines as Topic; D006801:Humans; D007344:Insurance Claim Reporting / Q000592:standards*; D019370:Observation; D010343:Patient Admission / Q000191:economics*; D014481:United States