title: Staying ahead in a changing regulatory environment.
authors.affiliation: Johns Hopkins Health System, Baltimore, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Allen
authors.forename: Caroline
authors.initials: C
authors.lastname: Piselli
authors.forename: Glenna
authors.initials: G
authors.lastname: Friedman
mesh_terms: D014487:Centers for Medicare and Medicaid Services, U.S.; D003953:Diagnosis-Related Groups / Q000191:economics*; D005377:Financial Management, Hospital / Q000379:methods*; D017721:Hospital Costs; D006801:Humans; D008484:Medicaid / Q000331:legislation & jurisprudence*; D006278:Medicare / Q000331:legislation & jurisprudence*; D011445:Prospective Payment System / Q000331:legislation & jurisprudence*; D012720:Severity of Illness Index; D014481:United States