Suture Button Suspensionplasty Fixation System for Thumb Carpometacarpal Osteoarthritis
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Defines BCBSRI coverage stance for use of suture button suspensionplasty systems as an adjunct to trapeziectomy for thumb CMC osteoarthritis for Medicare Advantage and commercial members.
No material clinical or coverage changes in this revision.
Coverage Determination
Coverage determination
Covered when ALL of the following are met:
Use of a suture button suspensionplasty fixation system as a treatment for thumb carpometacarpal (CMC) osteoarthritis is not an approved covered service under this policy. For Medicare Advantage members the procedure is not covered because the evidence is insufficient to determine the effects of the technology on health outcomes. For Commercial products the procedure is designated not medically necessary for the same reason: the available evidence does not adequately demonstrate clinical benefit.
For members covered under Commercial Products, the use of a suture button suspensionplasty fixation system for thumb CMC osteoarthritis is considered not medically necessary. The rationale is that the current evidence is insufficient to determine whether the procedure improves health outcomes compared with established treatments, and therefore it does not meet the plan’s requirements for medical necessity.
Billing and Coding
| 26989 | Unlisted procedure, hands or fingers |
Provider Requirements & Actions
Prior authorization not applicable; check member benefits
Prior authorization does not apply for this service; however, benefits may vary by group or contract — verify coverage in the member's Benefit Booklet, Evidence of Coverage, or Subscriber Agreement.
Conservative therapy is first‑line; surgery considered after failure
Conservative (non‑surgical) measures are the recommended first‑line therapy for thumb CMC osteoarthritis; surgery (including suspensionplasty techniques) is considered only when conservative treatment fails to provide sufficient relief and functional improvement.
- Examples of first‑line measures: activity modification, rest, hand orthosis, NSAIDs, physical therapy, and corticosteroid injections.
- Decision to proceed to surgery is based on symptoms and disability rather than radiographic stage alone.
High risk of denial — insufficient evidence / not medically necessary
Claims for suture button suspensionplasty fixation systems for thumb CMC osteoarthritis are not covered or are designated not medically necessary because the evidence is insufficient to determine effects on health outcomes; submission of claims may therefore be denied.
- Medicare Advantage: service not covered due to insufficient evidence.
- Commercial Products: service designated not medically necessary due to insufficient evidence.
Clinical Background
Thumb CMC osteoarthritis commonly affects middle‑aged and older adults and is frequently managed initially with conservative measures such as activity modification, orthoses, nonsteroidal anti‑inflammatory drugs, physical therapy, and corticosteroid injections. Surgical options are considered when these measures fail; the most commonly performed operation is trapeziectomy with ligament reconstruction and tendon interposition (LRTI). Suture button suspensionplasty (SBS) has been proposed as an adjunct or alternative technique that suspends the first metacarpal to the second using suture and buttons, but the evidence base evaluating patient‑important outcomes is currently insufficient to support coverage or medical necessity determinations in favor of the technology.
Definitions
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