Surgical · Wrist

Open incision into the radiocarpal or midcarpal joint of the wrist for exploration, drainage, or foreign body removal

Verified May 8, 2026 · 7 sources ↓

Medicare: $524.73
Total RVUs: 15.71
Global, days: 90
Region: Wrist

Drawn from CMSAAPCMdclarityCgsmedicareAAOS

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Identify the specific joint entered: radiocarpal, midcarpal, or both — vague language like 'wrist joint' may trigger downcoding to 25101
Document the indication: septic arthritis, suspected foreign body, joint exploration for instability workup, or drainage of abscess
Describe the surgical approach used, including incision location (dorsal vs. volar), tissue layers traversed, and findings on entry
Record all intraoperative findings: presence and character of fluid, foreign body description and location, synovial appearance, cartilage assessment
If modifier 22 is appended, document the specific factors that increased operative complexity beyond the norm (e.g., dense adhesions, prior surgery, distorted anatomy)
Note cultures obtained and any irrigation or debridement performed within the joint space

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 25 Significant separate E/M 50 Bilateral procedure 51 Multiple procedures 52 Reduced services 57 Decision for surgery 58 Staged or related 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 25040 covers an open arthrotomy of the radiocarpal or midcarpal joint — the surgeon cuts directly into the wrist joint to explore the joint space, drain an abscess or infected fluid, or retrieve a foreign body. This is an open procedure, not arthroscopic. The joint entered must be documented specifically: radiocarpal (between the radius and proximal carpal row) or midcarpal (between the proximal and distal carpal rows).

The code carries a 90-day global period. All routine postoperative visits, wound checks, and dressing changes through day 90 are bundled. An E/M during the global for an unrelated problem requires modifier 24; if the decision for surgery was made the same day as a major procedure, modifier 57 applies to the E/M. Coders sometimes confuse 25040 with 25101 — use 25040 when the specific joint (radiocarpal or midcarpal) is identified and entered; 25101 is the non-specific wrist joint arthrotomy code.

Hand surgeons and general surgeons are the top billing specialties. The procedure is performed in both hospital outpatient and ASC settings, with a meaningful site-of-service payment difference — see the Site of Service comparison table on this page.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	7.31
Practice expense RVU	6.95
Malpractice RVU	1.45
Total RVU	15.71
Medicare national rate	$524.73
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	$524.73
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 25040 get rejected.

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

Nonspecific joint documentation — operative note says 'wrist joint' without identifying radiocarpal or midcarpal, prompting payer to deny 25040 in favor of 25101 or request additional records
Bundling with same-day arthroscopic or soft-tissue wrist codes when a modifier is absent to establish a distinct procedural service
E/M billed same-day without modifier 25, resulting in the evaluation being bundled into the global package even when it was a separately identifiable decision visit
Bilateral claim submitted without modifier 50 or LT/RT laterality modifiers, triggering a duplicate-service denial
Global period violation — postoperative visit billed within 90 days for a complaint directly related to the original procedure, without modifier 24 to establish unrelatedness

Frequently asked questions

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

01What is the difference between CPT 25040 and CPT 25101?

25040 is specific to the radiocarpal or midcarpal joint. 25101 is used when the wrist joint entered is not specified or is an 'other' wrist joint arthrotomy. If the operative note names the joint — radiocarpal or midcarpal — bill 25040. If the documentation is vague, 25101 may be the defensible choice, but the better fix is to get the surgeon to specify the joint in the dictation.

02Does CPT 25040 have a 90-day global period?

Yes. The 90-day global bundles the day-before preoperative visit, the procedure itself, and all routine postoperative care through day 90. Any E/M for an unrelated problem during that window needs modifier 24. The decision-for-surgery visit on the same day or day before a 90-day global procedure takes modifier 57.

03Can 25040 be billed bilaterally?

Yes, if both wrists are opened in the same session. Report with modifier 50, or submit two line items with LT and RT respectively, depending on payer preference. Expect the second side to be reimbursed at a reduced rate — Medicare typically pays 150% of the single-procedure allowable for bilateral claims.

04When is modifier 22 appropriate with 25040?

When operative complexity is substantially greater than typical — for example, a wrist with prior surgical scarring, dense adhesions, or distorted anatomy from previous trauma. The operative note must articulate the specific factors that increased time and effort. Without that narrative, auditors will strip modifier 22 on review.

05Is 25040 ever used for septic wrist arthritis?

Yes. Septic arthritis with joint drainage is a classic indication. Document the culture swabs taken, the character and volume of purulent fluid, and the irrigation performed. The ICD-10 diagnosis code for the infectious etiology must align with the procedure — mismatched diagnosis is a common denial trigger for infectious indication cases.

06If the surgeon returns to the OR during the global period for a complication, which modifier applies?

Modifier 78 if the return is for a complication related to the original 25040 procedure (e.g., re-drainage of a persistent abscess). Modifier 79 if the return is for a completely unrelated procedure on the same patient during the 90-day global. Do not invert these — using 79 for a related complication is an audit flag.

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 joint entered (radiocarpal vs. midcarpal), the indication, the surgical approach by name, intraoperative findings including fluid character and foreign body details, and any cultures or irrigation performed. That documentation locks in 25040 over the less-specific 25101 and gives auditors exactly what they need to support the global period and any modifier 22 claim.

See how Mira captures CPT 25040 documentation