How does one bill for a lessor MTPJ implant procedure?

Technically there is no lessor MTPJ implant code procedure and because of this it would be billed as CPT 28899- Unlisted procedure, foot or toes. The reason this is the code is that none exists. You should pre-authorize this code and fee before surgery. The recommendation is to submit before surgery to the insurance a comparable code explaining the service and work RVU you feel matches the surgery performed analogous to another surgery. In this case possibly use CPT 28291 has a work RVU of 8.01.