Answer: CPT does not include a code for hallux arthroplasty with implant, so it’s time to turn to unlisted codes.
Your best option is to report 28899 (Unlisted procedure, foot or toes). When you determine a comparison code for the most accurate reimbursement, compare the unlisted code 28899 to 28289 (Hallux rigidus correction with cheilectomy, debridement and capsular release of the first metatarsophalangeal joint) or 28293 (Correction, hallux valgus [bunion], with or without sesamoidectomy; resection of joint with implant) when submitting your claim.
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