Medicare billing: ignorance is not a defense.
Peters
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D003953:Diagnosis-Related Groups / Q000145:classification / Q000191:economics; D006801:Humans; D006278:Medicare / Q000191:economics* / Q000331:legislation & jurisprudence; D009722:Nurse Practitioners / Q000191:economics*; D012051:Reimbursement Mechanisms / Q000331:legislation & jurisprudence*; D014481:United States