CPT Code 27599: Unlisted Procedure, Femur or Knee

Yes, if the procedure is not accurately described by an existing CPT code, CPT 27599 may be used as an unlisted procedure code.

Coverage varies by payer and typically requires prior authorization, detailed documentation, and clinical justification to support medical necessity.

Include the operative note, a comparable CPT code for valuation, and a cover letter with clinical rationale to support the use of CPT 27599.