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Site of Service Checker

Is this procedure inpatient-only? Check 1,438 CMS-designated inpatient-only codes.

About the Inpatient-Only List

CMS maintains an "Inpatient-Only" list of procedures that can only be paid when performed in an inpatient hospital setting. These are typically complex, high-risk procedures like CABG (33533), major spinal fusions, and major joint reconstructions. Performing them in an ASC or hospital outpatient department will result in non-payment. This tool derives the list from OPPS Addendum B (Status Indicator C) for CY2026.

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