title: The "groupings" methodology in Massachusetts hospital charge control.
mesh_terms: D003361:Cost Allocation; D005249:Fees and Charges; D006761:Hospitals / Q000145:classification*; D006801:Humans; D008404:Massachusetts; D008962:Models, Theoretical; D011907:Rate Setting and Review / Q000379:methods*; D012051:Reimbursement Mechanisms