Revised Cost Estimates of Medicaid Recipients With Serious Mental Illness and HIV-AIDS Rothbard AB et al. - In 1996 persons with both illnesses had the highest annual medical and behavioral health treatment expenditures at $20,038 per person, followed by persons with only HIV-AIDS at $14,714. The cost of care for the HIV-AIDS population, regardless of the presence of serious mental illness, averaged $16,253 per person. [more...]