Capsulodesis of a single metacarpophalangeal (MCP) joint, tightening the joint capsule to restore stability at the knuckle.

Verified May 8, 2026 · 6 sources ↓

Medicare: $717.45
Total RVUs: 21.48
Global, days: 90
Region: Hand

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Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 6 cited references ↓

Specify which digit(s) were treated — finger number and hand laterality (LT/RT) must appear in the operative note
Document the capsular incision technique, degree of laxity or hyperextension deformity corrected, and tensioning method used
State the preoperative diagnosis explicitly — instability, hyperextension laxity, or spasticity-related deformity — to support ICD-10 pairing
If multiple digits were treated, document each digit separately to support correct code selection (26516 vs. 26517 vs. 26518)
Confirm operative note names the anatomical approach and structures repaired; 'standard capsulodesis performed' is insufficient for audit purposes
For modifier 22, quantify increased complexity — adhesions encountered, distorted anatomy, prior surgery — with time documentation

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 24 Unrelated E/M during global 51 Multiple procedures 59 Distinct service 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 6 cited references ↓

CPT 26516 describes capsulodesis of a single metacarpophalangeal joint — a procedure where the surgeon incises the joint capsule and reattaches it under increased tension to the metacarpal and proximal phalanx to correct hyperextension instability or laxity. It is not an arthrodesis (bony fusion); the CMS short descriptor 'fusion of knuckle joint' is misleading. The operative work is capsular repair and tensioning, not joint fusion. This distinction matters for ICD-10 pairing: instability and laxity diagnoses drive the claim, not degenerative arthritis diagnoses that would point toward arthrodesis codes.

The code applies to one digit only. For two-digit capsulodesis, add 26517; for three or more digits, add 26518. Billing 26516 alone when the operative note documents work on multiple digits is a common undercoding error — and billing three separate units of 26516 instead of the correct add-on structure will trigger NCCI edits. The 90-day global period means all routine post-op hand therapy referrals, splinting checks, and office visits within that window are bundled unless you append modifier 24 for unrelated E/M services.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	7.14
Practice expense RVU	12.97
Malpractice RVU	1.37
Total RVU	21.48
Medicare national rate	$717.45
Global period	90 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$717.45
HOPD (APC 5113) Hospital outpatient department	$3,342.87
ASC (PI A2) Ambulatory surgical center (freestanding)	$1,644.87

Common denial reasons

The recurring reasons claims for CPT 26516 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

ICD-10 mismatch: degenerative arthritis diagnoses paired with a stability/capsulodesis code instead of a joint laxity or instability diagnosis
Bilateral modifier 50 applied incorrectly — MCP capsulodesis is digit-specific, not a bilateral procedure in the traditional sense; use LT/RT with add-on codes instead
Billing multiple units of 26516 for multiple digits instead of using the correct add-on code structure (26517, 26518)
NCCI bundle violation: arthroscopy codes 29900–29902 are bundled with 26516 and not separately payable without a modifier supported by distinct documentation
Missing laterality modifier causes claim rejection or RAC scrutiny, particularly for Medicare and many commercial payers
Services billed separately during the 90-day global that are routine post-op care without modifier 24 or 79

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01Is 26516 really a 'fusion' procedure?

No. The CMS short descriptor 'fusion of knuckle joint' is a misnomer. CPT 26516 describes capsulodesis — capsular tightening to restore MCP joint stability — not arthrodesis. Pairing it with arthrodesis ICD-10 codes will get the claim denied. Use joint instability or laxity diagnoses.

02How do you bill capsulodesis on two or three digits in the same session?

Use 26516 for the first digit, 26517 for the second digit, and 26518 when three or more digits are addressed. Do not bill multiple units of 26516. The add-on code structure is required, and NCCI edits will catch multiple units of the primary code.

03Can 26516 be billed with arthroscopy codes on the same date?

No. CPT codes 29900, 29901, and 29902 are bundled with 26516 per NCCI edits and are not separately payable. Appending modifier 59 is not appropriate unless the arthroscopy was performed on a completely separate anatomical site with distinct documentation.

04What modifiers are needed for a right-hand single-digit MCP capsulodesis?

Append modifier RT to indicate right side. If performed alongside other hand procedures in the same session, modifier 51 may apply. Do not use modifier 50 — this is a digit-specific procedure, not a true bilateral procedure.

05Does the 90-day global affect post-op hand therapy coordination?

The global period covers the surgeon's post-op visits and routine care. It does not bundle separately billed hand therapy services by a therapist. However, if the surgeon bills an E/M during the global for a related issue, modifier 24 is required to avoid denial.

06When is modifier 22 appropriate for 26516?

Modifier 22 applies when operative complexity is substantially greater than typical — for example, significant scarring from prior surgery, severe deformity requiring additional reconstructive steps, or prolonged operative time. The note must document the specific factors and operative time to support the upcharge.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira's AI scribe captures the specific digit treated, laterality, the degree of MCP hyperextension or instability documented intraoperatively, the capsular incision and tensioning technique, and the surgeon's description of corrected deformity. This prevents the two most common denials for 26516: an ICD-10 mismatch from a vague diagnosis and an undercoding error when multiple digits are addressed in the same session.

See how Mira captures CPT 26516 documentation