CPT code 25320 – Wrist joint capsule and ligament repair

Key takeaways

CPT code 25320 covers open capsulorrhaphy or reconstruction of the wrist for carpal instability, while arthroscopic wrist work takes codes 29840-29847.

The 2026 Medicare fee schedule gives 25320 a total of 27.77 facility RVUs and no non-facility rate, about $928 nationally.

The 90-day global period bundles routine post-op care, and modifiers 24, 57, 58, 78 and 79 cover the exceptions.

Payers expect LT or RT on every 25320 line, and a missing laterality modifier is a common reason for rejection.

Pabau, our practice management software, sends 25320 claims to thousands of US payers through Claim.MD after a real-time eligibility check.

CPT code 25320: Official descriptor and procedure overview

CPT code 25320 is the code for open capsulorrhaphy or reconstruction of the wrist to treat carpal instability. The official AMA descriptor reads as follows.

Capsulorrhaphy or reconstruction, wrist, open (eg, capsulodesis, ligament repair, tendon transfer or graft) (includes synovectomy, capsulotomy and open reduction) for carpal instability.

In plain terms, the surgeon opens the wrist and tightens, repairs or rebuilds the soft tissue that keeps the carpal bones aligned. The code sits in the 25000-25999 forearm and wrist subsection of the CPT surgery section, and it covers the wrist only.

The surgeon reaches the damaged structure through a dorsal or palmar incision. Common techniques include:

• Capsular imbrication, which folds and tightens lax capsule tissue
• Capsulodesis, which uses a flap of capsule to hold the scaphoid in position
• Ligament repair or plication, which sutures a torn or stretched ligament
• Ligament reconstruction with a tendon transfer or tendon graft

The code applies to intrinsic ligament repairs, such as the scapholunate and lunotriquetral interosseous ligaments, and to extrinsic capsular procedures.

25320 is an open procedure only. Arthroscopic wrist procedures take their own codes, 29840-29847. Billing 25320 for a procedure the surgeon documented as arthroscopic is a coding error and a common denial trigger.

What the code includes and excludes

Knowing where 25320 stops prevents unbundling errors. The table below shows what the code already pays for and what goes on its own claim line.

Codes commonly confused with 25320

The 25000-25999 range holds several neighboring wrist procedures. Coders mis-select from the codes below when the operative note is unclear about the approach (open or arthroscopic) or the main structure repaired.

When the operative report documents an open capsule repair and a separate arthroscopic procedure, the arthroscopic code may be reportable. Check the NCCI edits for the current quarter before billing both codes together.

ICD-10 codes that support medical necessity

The diagnosis code has to show why open ligament or capsule repair was needed. ICD-10-CM has no code that names the scapholunate ligament, so a scapholunate tear is coded to other ligament of wrist (S63.39-).

Use the A (initial encounter) seventh character for the surgical episode on injury codes. Check every code against the current ICD-10-CM tabular list before billing. The diagnosis must justify open repair over conservative care or arthroscopy.

RVU values and 2026 fee schedule data

Relative value units (RVUs) from the CMS Medicare Physician Fee Schedule (MPFS) set Medicare’s payment for 25320. Most commercial contracts benchmark against them too. The values below come from the CMS 2026 relative value file (October release). You can confirm them in the CMS Physician Fee Schedule lookup tool.

The NA flag marks 25320 as a facility-only code. CMS sets no non-facility rate because the procedure is rarely or never performed outside a hospital or surgical center.

Multiply 27.77 RVUs by the 2026 conversion factor of $33.4009, and the national facility rate comes to $927.54. Clinicians in a qualifying alternative payment model (APM) use the $33.5675 factor, which gives about $932. The chart below shows how the three components build that figure, and how the global fee splits.

Medicare and commercial reimbursement

Medicare pays 25320 under the MPFS, using the RVU calculation above adjusted by the geographic practice cost index (GPCI) for your locality. Nationally, that starts from about $928 per case. RVUs change with each annual MPFS final rule, so check the current year’s rate before you quote a fee.

Commercial payers usually pay a percentage of the MPFS or a separately negotiated fee schedule. For hospital outpatient cases, the surgeon bills 25320 for the professional service and the facility bills its own service codes.

Global period and what it bundles

CPT code 25320 carries a 90-day global period, which makes it a major surgery under CMS rules. The window opens the day before surgery and closes 90 days after it.

Knowing the global package is one of the medical billing fundamentals that prevents overbilling. It covers the preoperative visit the day before surgery, the procedure itself, and routine follow-up care for 90 days.

CMS splits the global fee 10% preoperative, 69% intraoperative and 21% postoperative. Those shares set the payment when care is split between clinicians. Modifier 54 marks surgical care only, 55 postoperative management only, and 56 preoperative management only.

Services you can bill separately during the global period:

• An E/M visit for an unrelated problem (modifier 24 on the E/M code)
• The decision for surgery, made the day before or the day of surgery (modifier 57 on the E/M code)
• A staged or more extensive procedure planned at the time of surgery (modifier 58)
• A return to the operating room for a complication of the original surgery (modifier 78)
• An unrelated procedure during the global window (modifier 79)
• Diagnostic imaging or labs that aren’t part of routine post-op care

Modifiers used with CPT 25320

Correct modifiers are one of the clearest signs of documentation accuracy on a 25320 claim. The table below covers the ones coders apply most often.

Prior authorization requirements

Traditional Medicare (Parts A and B) doesn’t include CPT code 25320 on its prior authorization list for hospital outpatient services. Medicare Advantage plans set their own rules, so check with the specific plan before scheduling.

Many commercial payers and Medicare Advantage plans require prior authorization for 25320 as an elective wrist procedure. When they do, the request usually includes:

• Imaging that confirms instability, such as an MRI showing ligament disruption or dynamic stress radiographs
• Documentation of failed conservative treatment, covering the weeks of splinting and hand therapy the plan requires
• Clinical notes that show carpal instability and the medical necessity of open repair
• The planned CPT code and its ICD-10-CM diagnosis codes

Documentation for a clean claim

A vague or templated operative report is a frequent cause of medical necessity denials for 25320. Payers check whether the documented procedure matches the open-repair descriptor, and an op note that reads like an arthroscopy report won’t pass review. Meeting medical billing compliance standards takes an operative record with these elements:

• Pre-operative diagnosis: The named instability pattern (DISI, VISI, scapholunate dissociation), with the supporting imaging report cited
• Failed conservative treatment: The duration and type of prior management (splinting, hand therapy) in the pre-op notes
• Open approach confirmed: The incision location (dorsal or palmar), its size, and the layers accessed
• Structures repaired: The capsule, SL ligament, LT ligament or other structure the surgeon addressed
• Technique: Imbrication, plication or reconstruction with graft, described in terms that match the 25320 descriptor
• Laterality: Right or left wrist, matching the modifier on the claim
• Post-operative plan: Immobilization period and the planned follow-up

Complete documentation is the first item on any list of clean claim requirements. When the op note and the 25320 descriptor don’t match, the payer can deny on medical necessity or code accuracy.

Common denial reasons and fixes

Denials for CPT code 25320 cluster around seven recurring issues. Good denial management workflows track each denial by its claim adjustment reason code (CARC), so patterns show up across the practice. Our guide to medical billing denial codes explains each code and its usual fix.

• Missing or invalid prior authorization (CO-15): Put the authorization number on the claim line. If you got approval by phone, ask for a written reference number. Appeal with the authorization record and the date it was issued.
• Medical necessity not established (CO-50): The diagnosis code doesn’t justify open repair, or the notes show no failed conservative treatment. Appeal with the pre-op imaging reports and the conservative treatment timeline.
• NCCI bundling edit (CO-97): A code on the claim bundles with 25320 and no valid modifier bypasses the edit. Check the current quarter’s NCCI edit file, add modifier 59 (or XS, XU or XE) with documentation of the distinct service, and resubmit.
• Wrong code for the approach: An arthroscopic operative report went out with the open code 25320. If the surgery was open and the note is unclear, the surgeon amends the op note before you resubmit.
• Missing laterality modifier (CO-4): Add LT or RT to match the operative site and resubmit. Most payers reject this electronically before anyone reviews the claim.
• Timely filing (CO-29): File primary claims within the payer’s window, which is one year from the date of service for Medicare. Appeal with proof of timely filing if the rejection was an error.
• Operative note doesn’t match the descriptor: The note describes a procedure other than an open capsulorrhaphy. The physician reviews it, and may need to amend the report before any appeal.

Bundling and unbundling rules

The National Correct Coding Initiative (NCCI), run by CMS, defines which codes bundle with CPT code 25320 and whether a modifier can override the edit. The NCCI Policy Manual is the authoritative reference.

Use the AAPC code lookup for a quick edit check, and confirm it in the CMS NCCI resources for the current quarterly edit table.

Key bundling scenarios for 25320:

• Diagnostic arthroscopy (29840) on the same day: Payers generally bundle the scope when the surgeon moves on to an open repair in the same session. Check the NCCI modifier indicator before billing both.
• Surgical arthroscopy (29843, 29846) with 25320: Modifier 59 or an X modifier may apply when the surgeon documents both as distinct procedures on distinct structures. The op note must clearly separate the two.
• Bilateral 25320: Report it on two lines with LT and RT, or once with modifier 50, depending on the payer. Medicare pays a bilateral 25320 at 150% of the single-side rate.
• 25320 with a tendon transfer (25310): A transfer done as part of the reconstruction is included in 25320, because the descriptor names it. A separate transfer for a different deficit may be reportable, so check the NCCI edit file and document why both were needed.

How claims management software protects CPT 25320 claims

Many practices send a 25320 claim through several hands. The surgeon dictates the op note, a coder picks the codes and modifiers, and someone keys the claim into a clearinghouse portal. Each handoff is a chance to lose the LT modifier or the authorization number.

Pabau, the practice management platform we build, keeps the operative note, the invoice and the claim in one patient record. Its claims management software checks each claim for missing or invalid details before it leaves. The claim then goes through Claim.MD to thousands of US payers, after a real-time eligibility check that surfaces coverage problems before surgery.

Claim statuses and electronic remittance advice (ERA) flow back into Pabau’s claims dashboard. Your billing team sees which 25320 claims are paid, pending or denied without logging in to each payer’s portal.

Streamline 25320 claims from documentation to payment

Pabau keeps the operative note, claim validation and remittance tracking in one workflow. Send CPT 25320 claims to thousands of US payers through Claim.MD and follow each one to payment.

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Conclusion

CPT code 25320 pays well for an open wrist reconstruction, but only when the op note, the diagnosis and the modifiers tell the same story. Before you submit, read the op note against the descriptor and confirm the approach was open.

After a clean surgical claim, the 90-day global period is where revenue slips away. Review every post-op visit, and bill unrelated care with modifier 24 rather than writing it off.

Pabau keeps the operative note, the claim and its remittance in one record, so those checks happen before submission rather than after a denial. Book a demo to see how it handles surgical claims like 25320 from op note to payment.

Continue your research

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Tracking denial patterns across your orthopedic caseload? Revenue cycle management fundamentals covers how to build denial tracking into your billing workflow.

Submitting 837P files for wrist surgery claims? 837P electronic claim file guide breaks down the EDI transaction set used for professional claims including CPT 25320.

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