Surgical release of a metacarpophalangeal joint capsule contracture — either by incising (capsulotomy) or excising (capsulectomy) the capsule — to restore finger extension and MCP joint mobility. Reported per joint.

Verified May 8, 2026 · 7 sources ↓

Medicare: $670.69
Work RVU: 5.33
Global, days: 90
Region: Hand

Drawn from AAPCMdclarityEatonhandEmednyCMS

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Specify which MCP joint(s) were treated by digit number (e.g., index finger MCP, long finger MCP) — auditors reject notes that say 'multiple joints' without enumeration.
Document whether the procedure was a capsulotomy (incision) or capsulectomy (excision) — the code covers both, but operative note must match the technique performed.
Record pre- and intraoperative range of motion measurements to establish functional deficit and demonstrate procedural benefit.
Identify laterality explicitly (left hand, right hand, or bilateral) in both the operative note and the procedure order.
State the underlying diagnosis driving the contracture — post-traumatic, inflammatory, idiopathic — with a corresponding ICD-10 code; missing or mismatched diagnosis is the top cause of denial.
If billing multiple units same-session, list each joint separately with individual documentation of the capsular work performed at each level.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 59 Distinct service 76 Repeat, same physician 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side 50 Bilateral procedure XS Separate structure

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 26520 covers open capsulotomy or capsulectomy at the metacarpophalangeal (MCP) joint — the knuckle connecting the metacarpal to the proximal phalanx. The surgeon incises or removes the contracted capsular tissue to restore passive and active range of motion. The code is reported per joint, so multiple contracted MCP joints addressed in the same session each generate a separate line with modifier 51 on the secondary joints.

The 90-day global period governs all post-op management. Routine splinting, therapy referrals, and wound care through day 90 are bundled. Any unrelated procedure performed during that window requires modifier 79; an unplanned return to the OR for a related complication uses modifier 78. If the same procedure is staged on the contralateral hand at a separate session, no modifier adjustment is needed — each encounter bills independently with LT or RT to identify laterality.

26520 is distinct from Dupuytren-related codes (26040, 26045, 26123, 26125), which target fascial cord disease rather than the joint capsule itself. If the operative note conflates fascia release with capsular release, expect payer scrutiny. Document the specific capsular structure addressed and the intraoperative ROM improvement to support medical necessity.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU vs. total RVU

The work RVU (5.33) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (20.08) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	5.33
Practice expense RVU	13.73
Malpractice RVU	1.02
Total RVU	20.08
Medicare national rate	$670.69
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	$670.69
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 26520 get rejected.

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

Missing or mismatched ICD-10 diagnosis — payers require a joint contracture diagnosis (e.g., M20.0x, M24.5x) that maps directly to the MCP joint treated.
Laterality not documented — claims lacking LT or RT when required by the payer edit system are returned or denied without payment.
Bundling with Dupuytren fasciectomy codes (26123/26125) on the same digit without modifier 59 or XS establishing a distinct anatomic site — capsule and palmar fascia are treated as a single site by most NCCI edits.
Multiple units billed without per-joint documentation — each 26520 unit requires individual operative note support; a single paragraph covering 'both joints' is insufficient.
Procedure performed in the global period of a prior hand surgery without modifier 79 (unrelated) or 78 (related return to OR).

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01Is 26520 reported once per hand or once per joint?

Once per joint. If you release two MCP joints in the same session, bill 26520 twice — once as the primary, once with modifier 51. Each line needs separate documentation of the capsular work at that specific joint.

02How does 26520 differ from Dupuytren codes like 26123?

26520 targets the MCP joint capsule itself. Dupuytren codes (26040, 26045, 26123, 26125) address the palmar fascial cord. If the surgeon releases both the cord and the capsule on the same digit, append modifier 59 or XS to the secondary code — but verify your NCCI edit pair before billing both, because bundling rules treat contiguous structures cautiously.

03Can 26520 and 26525 (IP joint capsulotomy) be billed together?

Yes, if the MCP and IP joint releases were performed as distinct procedures on the same digit or different digits. Use modifier 51 on the lower-valued code and document each joint separately. The anatomic distinction between MCP and IP is sufficient to override NCCI bundling — those are different joints.

04What modifier applies when a patient returns to the OR during the 90-day global for a wound complication from 26520?

Modifier 78 — unplanned return to the OR for a procedure related to the original surgery. Don't use modifier 79 here; that's reserved for unrelated procedures during the post-op period. Inverting these is an audit flag.

05Does the 90-day global period cover post-op hand therapy referrals?

The global covers the physician's own post-op management — not separately billed therapy. Hand therapy (CPT 97110, 97530, etc.) billed by a therapist is outside the surgeon's global and bills independently. If the surgeon directly supervises therapy in-office during the global, those services are bundled.

06When should modifier 22 be appended to 26520?

When the procedure required substantially more work than typical — for example, severe post-burn contracture with dense adhesions requiring significantly longer operative time and increased complexity. Attach a cover letter quantifying the added work; without it, payers routinely ignore modifier 22 and pay at the base rate.

Sources & references

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

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