Fasciotomy releasing a single compartment of the forearm to relieve elevated pressure, performed through an incision carried deep to the fascia.

Verified May 8, 2026 · 7 sources ↓

Medicare: $721.79
Total RVUs: 21.61
Global, days: 90
Region: Wrist

Drawn from CMSAAPCBedrockbillingAAOSMdclarity

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 compartment was released — flexor or extensor — by name in the operative note.
Document that the incision was carried deep to the fascia, not limited to skin or subcutaneous tissue.
Record the clinical indication: compartment pressure measurements, signs/symptoms of acute compartment syndrome, or mechanism of injury triggering the procedure.
Identify the laterality (left or right forearm) explicitly in the operative report and on the claim.
If bilateral procedures are performed, document medical necessity for each side separately.
For any same-day E&M billed with modifier 25, document the distinct evaluation work that goes beyond standard pre-procedure assessment.

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 57 Decision for surgery 58 Staged or related 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side XS Separate structure

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 25020 describes a decompression fasciotomy of the forearm in which a single flexor or extensor compartment is released. The incision must be carried deep to the fascia — a superficial skin-level cut does not satisfy the code. This procedure is most often performed urgently for acute compartment syndrome following trauma, crush injury, fracture, or reperfusion, and is billed by hand surgeons, orthopedic surgeons, and plastic/reconstructive surgeons.

The code carries a 90-day global period. All routine post-op visits, wound checks, and dressing changes within that window are bundled. Billing a separate E&M during the global requires modifier 24 (unrelated) or 25 (significant and separately identifiable, same-day). If the decision for surgery is made at the same visit and the procedure is considered major, append modifier 57 to the E&M code — not modifier 25.

NCCI bundles carpal tunnel release (64721) with 25020 when both are reported together. Per the NCCI edit hierarchy, 25020 is the higher-RVU comprehensive code; 64721 is the column-2 component. Reporting both without a valid modifier will result in 64721 being denied. Bilateral forearm decompression on the same date requires modifier 50, or LT/RT on separate line items depending on payer preference.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	5.91
Practice expense RVU	14.56
Malpractice RVU	1.14
Total RVU	21.61
Medicare national rate	$721.79
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	$721.79
HOPD (APC 5112) Hospital outpatient department	$1,642.82
ASC (PI A2) Ambulatory surgical center (freestanding)	$872.87

Common denial reasons

The recurring reasons claims for CPT 25020 get rejected.

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

Operative note lacks documentation that the incision reached the fascial level, disqualifying the procedure from 25020.
64721 (carpal tunnel release) submitted on the same claim without a valid modifier — NCCI bundles it into 25020 as the column-2 code.
Missing or ambiguous laterality — claim billed without LT/RT or modifier 50 when bilateral decompression was performed.
E&M billed same-day during the 90-day global period without modifier 24 or 25, triggering a global-period bundle denial.
Modifier 57 omitted from the E&M code when the decision for this major (90-day global) surgery was made at the same visit.

Frequently asked questions

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

01Can 25020 and 64721 be billed together on the same date?

NCCI bundles 64721 into 25020. Because 25020 carries higher RVUs, it is the column-1 comprehensive code. Carpal tunnel release is denied as the column-2 component. A modifier can override the edit only if the two procedures were performed on anatomically distinct structures with clear documentation — use modifier XS and expect payer scrutiny.

02What modifier do I use when 25020 is performed bilaterally?

Append modifier 50 on a single line item, or bill two separate lines with LT and RT. Confirm payer preference before submitting — Medicare generally accepts modifier 50 on one line; some commercial payers want two lines.

03Can I bill an E&M on the same day as 25020?

Yes, if the E&M represents work that is significant and separately identifiable beyond the pre-procedure assessment. Append modifier 25 to the E&M code. Because 25020 has a 90-day global, use modifier 57 instead when the E&M is the visit at which the decision for surgery was made.

04Does 25020 cover debridement of nonviable tissue?

No. Decompression without debridement is 25020. If nonviable muscle or tissue is debrided during the same session, that is captured by CPT 25023 (both compartments with debridement) or 25022 (single compartment with debridement). Selecting the wrong code when debridement is documented is an audit risk.

05How does the 90-day global period affect post-op billing for complications?

Complications requiring a return to the OR for a related procedure during the 90-day global are billed with modifier 78. An unrelated surgical procedure performed during the global by the same physician uses modifier 79. Do not invert these — modifier 78 is specifically for related, unplanned OR returns.

06Is modifier 22 ever justified for 25020?

Yes, in cases of unusual complexity — severely contracted tissue, prior scarring, or extended operative time well beyond the typical case. The operative note must explicitly describe what made the procedure substantially more difficult. Modifier 22 without supporting documentation will be denied or recouped on audit.

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 compartment name (flexor or extensor), explicit confirmation that the incision was carried to the fascial level, laterality, and the clinical trigger (compartment pressures, mechanism, or exam findings) directly from surgeon dictation. That specificity prevents the two most common audit flags: notes that omit fascial depth and operative reports that fail to identify the compartment released.

See how Mira captures CPT 25020 documentation