Yes. Most payers, including Medicare and commercial insurers, require prior authorization for an unlisted code like CPT code 37799, as they trigger manual review processes.

CPT Code 37799: Unlisted Procedure, Vascular Surgery
Learn about CPT Code 37799, used for unlisted vascular surgery procedures when no specific code applies.
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Frequently asked questions
Yes, but be aware that investigational or experimental procedures often lead to denials unless there's strong supporting evidence and prior approval. Always check with the payer for coverage determinations.
To improve reimbursement chances, submit a complete claim including a cover letter, the operative report, and a comparable CPT code to guide valuation. Emphasize medical necessity and explain why no existing code applies.
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