Surgical removal of a subfascial (intramuscular) soft tissue tumor of the abdominal wall measuring less than 5 cm, with specimen sent for pathologic analysis.

Verified May 8, 2026 · 5 sources ↓

Medicare: $547.44
Total RVUs: 16.39
Global, days: 90
Region: General

Drawn from CMSAAPCMdclarity

Documentation requirements

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

Source · Editorial brief grounded in 5 cited references ↓

Tumor size documented in centimeters (specimen measurement, not incision length) confirming lesion is less than 5 cm
Depth of dissection confirming subfascial (below the fascial layer, intramuscular) location — not subcutaneous
Pathology report or operative note indicating specimen was submitted for tissue analysis
Operative note specifying surgical approach, planes of dissection, and extent of resection
Imaging or pre-operative workup supporting soft tissue tumor diagnosis, where available
Diagnosis code(s) aligned to the confirmed or suspected nature of the abdominal wall tumor

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 50 Bilateral procedure 51 Multiple procedures 52 Reduced services 58 Staged or related 59 Distinct service 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 5 cited references ↓

CPT 22900 covers open excision of a deep abdominal wall tumor — specifically subfascial, meaning below the fascia and within or beneath the muscle layer — when the lesion measures less than 5 cm. The subfascial depth is what separates this code from superficial or subcutaneous abdominal lesion excisions; the dissection must reach below the fascial plane. Specimen submission for pathologic evaluation is inherent to the procedure.

The 90-day global period applies. All routine follow-up visits, wound checks, and suture removals through day 90 are bundled. Unrelated E/M services during the global window require modifier 24; a significant, separately identifiable E/M on the day of surgery requires modifier 25. If the tumor proves larger than 5 cm intraoperatively, bill CPT 22902 instead — do not upcode 22900 with modifier 22 as a substitute for selecting the correct size-based code.

Size measurement for code selection is based on the tumor itself, not the surgical excision defect. Document the specimen measurement from pathology or the operative note — not the skin incision length. Payers audit this distinction closely, and missing or inconsistent size documentation is the most common reason for downcoding or denial.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	8.11
Practice expense RVU	6.3
Malpractice RVU	1.98
Total RVU	16.39
Medicare national rate	$547.44
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	$547.44
HOPD (APC 5073) Hospital outpatient department	$2,967.63
ASC (PI G2) Ambulatory surgical center (freestanding)	$1,248.36

Common denial reasons

The recurring reasons claims for CPT 22900 get rejected.

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

Tumor size not explicitly documented in operative or pathology report, causing payer to downcode or deny
Depth insufficient — note describes subcutaneous rather than subfascial dissection, triggering edit to a lower-level excision code
CPT-ICD mismatch between a benign soft tissue neoplasm diagnosis and an operative note suggesting a different pathology
Unbundling: separately billing pathology interpretation or wound closure when these are integral to 22900
Wrong code selected when intraoperative measurement reveals tumor ≥ 5 cm — 22902 should be used instead

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01What distinguishes 22900 from a subcutaneous abdominal lesion excision?

22900 requires subfascial depth — the dissection must pass through the fascia into or beneath the muscle layer. Subcutaneous excisions of the abdominal wall are reported with integumentary excision codes, not 22900. The operative note must explicitly confirm subfascial depth.

02When should I bill 22902 instead of 22900?

Bill 22902 when the tumor measures 5 cm or greater. Size is based on the excised specimen, not the skin incision. If the intraoperative or pathology measurement meets or exceeds 5 cm, 22902 is the correct code regardless of pre-op imaging estimates.

03Can I bill a separate E/M visit on the day of surgery?

Only if it is a significant, separately identifiable service beyond the pre-op assessment — append modifier 25 to the E/M. Routine pre-op decision-making for the excision itself is bundled into 22900.

04Is pathology billed separately?

The surgeon's work of excising and submitting the specimen is included in 22900. The pathologist bills separately for interpretation under the appropriate 88xxx code. The surgeon does not separately bill for specimen handling.

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

All routine follow-up through day 90 is bundled. To bill an unrelated E/M during the global window, use modifier 24. A new, unrelated procedure during the global period requires modifier 79. A related return to the OR for a complication uses modifier 78.

06Can 22900 be billed bilaterally with modifier 50?

Bilateral abdominal wall tumor excisions are unusual but not impossible. If truly separate tumors are excised on both sides of the midline in the same session, modifier 50 may apply. Document each lesion's location, size, and depth separately. Confirm with the payer — some apply a 50% reduction to the second side.

Sources & references

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

Mira AI Scribe

Mira's AI scribe captures tumor depth (subfascial vs. subcutaneous), measured specimen size in centimeters, laterality, and the surgical planes of dissection directly from dictation. It flags operative notes that omit a numeric size measurement or describe only the incision length — the two documentation gaps that most frequently trigger downcoding to a superficial excision code or a payer size-mismatch denial.

See how Mira captures CPT 22900 documentation