title: HHS proposes regulation to close Medicaid payment loophole.
mesh_terms: D008484:Medicaid / Q000191:economics* / Q000331:legislation & jurisprudence* / Q000458:organization & administration; D012051:Reimbursement Mechanisms / Q000331:legislation & jurisprudence*; D014481:United States; D014483:United States Dept. of Health and Human Services