Who submits the claim for 0591T–0593T?

Short answer

The supervising physician or other eligible practitioner. The regulation says only the supervising practitioner may bill Medicare for incident-to services, and the supervisor need not be the practitioner treating the patient more broadly.

See 42 CFR 410.26(b)(5)(iv) and (v), added by CMS-1848-F (display copy pp. 2059–2060). How the claim is built (rendering and billing provider fields, modifiers) is a question for your billing team and MAC.

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