ISASS Member Survey for Review of New and Established CPT Codes

For Current Procedural Terminology (CPT) 2023, one new add-on code has been approved to report a second interspace lumbar total disc arthroplasty. This change requires review of physician work for both the base code 22857 and new add-on code 228XX. You are thus invited to participate in a survey that will take approximately 15 minutes to complete.

Important note: For this survey, the intra-service period includes total “skin-to-skin” time—specifically, the total time for the approach, the definitive procedure, and the closure, even if different aspects of the procedure are performed by more than one surgeon.

To complete the online survey, click here -> SURVEY

Please complete the survey by Monday, March 21, 2022.

We hope that you will take the time to help your society, in concert with the RUC, recommend accurate relative value units for physician work to CMS for these two CPT codes. Your input is vital to the success of this process, and we appreciate your time. If you have any questions about this survey, please contact Matthew Twetten at

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