(December 22, 2015, 11:20 AM EST) -- WASHINGTON, D.C. — South Carolina and Oregon repeatedly billed an Indian health program for Patient Protection and Affordable Care Act (ACA) Medicaid expenditures, according to a pair of December reports from the Department of Health and Human Services Office of Inspector General.

(South Carolina report available. Document #93-151223-013X. Oregon report available. Document #93-151223-014X.)

Under Medicaid, the federal government pays a share of a state’s medical expenditures based on the federal medical assistance percentage (FMAP). FMAP rates vary by state depending on per capita income, and certain...