Open treatment of carpometacarpal dislocation (non-thumb) involving complex injury patterns, multiple joints, or delayed presentation requiring surgical reduction

Verified May 8, 2026 · 7 sources ↓

Medicare: $592.53
Work RVU: 7.97
Global, days: 90
Region: Hand

Drawn from CMSAAPCEatonhandEmednyAbos

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 CMC joint(s) were treated and confirm the thumb CMC is excluded
Document the complicating factor explicitly: complex dislocation pattern, multiple joints involved, or delayed presentation with date of injury and timeline
Operative note must name the surgical approach and describe the open reduction technique — 'standard approach' is audit bait
Record internal fixation use if performed, including hardware type and placement
For delayed cases, document the reason operative intervention was deferred and why closed reduction was inadequate or not attempted
Pre-op imaging (X-ray or CT) confirming dislocation type and joint involvement should be referenced in the operative note

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 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side 80 Assistant surgeon AS PA/NP/CNS assistant

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 26686 covers open surgical reduction of carpometacarpal (CMC) dislocation at the non-thumb CMC joints when at least one complicating factor is present: complex dislocation anatomy, involvement of multiple CMC joints simultaneously, or a delay between injury and operative treatment. This is the step up from 26685, which covers straightforward single-joint open CMC reduction. If you're billing 26685, the case must not involve complexity, multiple joints, or delayed reduction — once any of those factors apply, 26686 is the correct code.

The 90-day global period attaches to 26686. Preoperative evaluation the day before surgery, the operative session itself, and all routine post-op management through day 90 are included. Unrelated E/M visits or procedures during the global window require modifier 24 or 79. A return to the OR for a related complication — hardware failure, wound dehiscence — bills with modifier 78.

Delayed reduction cases are a common audit target: document the date of injury, the date of initial presentation or failed closed management, and explicitly state why open treatment was required at a later date. Payers will scrutinize whether the delay was clinically justified and whether the operative note reflects complexity beyond a straightforward CMC dislocation.

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 (7.97) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (17.74) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	7.97
Practice expense RVU	8.08
Malpractice RVU	1.69
Total RVU	17.74
Medicare national rate	$592.53
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	$592.53
HOPD (APC 5113) Hospital outpatient department	$3,342.87
ASC (PI J8) Ambulatory surgical center (freestanding)	$2,084.06

Common denial reasons

The recurring reasons claims for CPT 26686 get rejected.

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

Insufficient documentation of complexity — payer downcodes to 26685 when the operative note doesn't explicitly support complex, multiple, or delayed criteria
Missing injury date or timeline when billing delayed reduction — payers deny without evidence of clinically justified delay
Thumb CMC dislocation billed under 26686 instead of the Bennett fracture family (26665) or 26685/26686 non-thumb pathway
Unbundling conflict when multiple CMC joints are treated and reported with separate codes instead of a single 26686 with modifier 22 for exceptional complexity
Global period violation — routine post-op follow-up billed separately within 90 days without modifier 24

Frequently asked questions

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

01What separates 26686 from 26685?

26685 is open CMC reduction for a single, straightforward dislocation. 26686 applies when the case involves a complex dislocation pattern, two or more CMC joints, or a delay between injury and surgical reduction. All three conditions independently justify 26686 — you don't need all three at once.

02Can I bill 26686 for each affected CMC joint separately?

No. 26686 covers multiple joints by definition — that's one of the three qualifying criteria. Billing a separate unit per joint would be unbundling. If the work was significantly greater than the code normally describes, append modifier 22 and attach documentation supporting the additional time and complexity.

03How do I bill a same-day nerve or tendon repair alongside 26686?

Separate anatomic structures justify separate coding. Append modifier 59 (or XS for a distinct structure) to the secondary procedure to bypass NCCI bundling. Confirm each repair is documented independently in the operative note.

04Is fluoroscopy separately billable with 26686?

Fluoroscopy used for intraoperative guidance during an open orthopedic procedure is generally considered integral to the surgical work and not separately payable. CMS NCCI policy specifies that when fluoroscopy is standard to the procedure, separate reporting is not supported. Do not add 76000 without a specific payer instruction permitting it.

05What ICD-10 codes pair with 26686?

The primary diagnosis should reflect dislocation of the carpometacarpal joint(s), non-thumb — look to the S63.0x category. Append the appropriate 7th character: A for initial encounter during active treatment, D for subsequent encounter during routine healing. For delayed presentations still in active treatment, 7th character A applies even if the patient is seeing a new provider.

06Does the 90-day global mean I can't bill anything for three months?

Routine post-op care included in the global cannot be billed separately. Unrelated E/M visits need modifier 24. A staged or unrelated procedure needs modifier 79. A return to the OR for a related complication — such as hardware migration — bills with modifier 78. Document medical necessity clearly in each case.

Sources & references

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

Mira Scribe

Mira's AI scribe captures the complicating factor from dictation — complex dislocation pattern, number of CMC joints opened, and the injury-to-surgery interval — and flags it in the procedure note. That prevents the most common downcode: a payer substituting 26685 because the operative note failed to articulate why 26686, rather than the simpler code, was the correct level of service.

See how Mira captures CPT 26686 documentation