OIG issues Spring 2026 Semiannual Report to Congress

The Office of Inspector General (OIG) recently published the latest edition of its semiannual report to Congress, summarizing key oversight activities conducted between October 1, 2025, and March 31, 2026. The report informs HHS leadership and Congress about significant findings, recommendations, enforcement actions, and other oversight efforts.

Overall, the OIG’s work generated $5.56 billion in investigative receivables, audit and evaluation receivables, and potential cost savings during this reporting period. The agency issued 78 audit reports and completed 881 investigations. It also issued 173 recommendations that identified roughly $958 million in questioned costs and funds that could be put to better use. Organizations implemented 182 of the OIG’s recommendations, resulting in nearly $263 million in savings.

Revenue cycle professionals should take note of the OIG’s recent oversight activities aimed at strengthening financial integrity. The report emphasizes findings from early 2026 that suggest Maine and Colorado may have made up to $123 million in improper fee-for-service Medicaid payments for certain autism therapy services. In October 2025, the OIG identified nearly $22.7 million in improper Medicare payments to suppliers for durable medical equipment furnished during inpatient stays.

The report also highlights the OIG’s efforts to identify other cost-saving opportunities, including findings related to opioid use disorder treatment services, continuous glucose monitors and supplies, and Stelara biosimilar drugs used to treat certain autoimmune diseases.

Beyond payment integrity, the report outlines the OIG’s ongoing efforts to combat healthcare fraud, protect patients from harm, address public health crises, safeguard grant and contract integrity, and strengthen cybersecurity. Revenue cycle professionals should read the report in full, as the findings could signal future oversight and enforcement priorities for both HHS and Congress.