Excision of a subcutaneous soft tissue tumor of the face or scalp measuring less than 2 cm.

Verified May 8, 2026 · 6 sources ↓

Medicare: $395.13
Work RVU: 2.92
Global, days: 90
Region: Other

Drawn from CMSMdclarityAAPCFindacodePayerprice

Documentation requirements

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

Source · Editorial brief grounded in 6 cited references ↓

Lesion size measured in centimeters — document the lesion dimension, not just the excision margins
Anatomic location confirmed as face or scalp (not neck or other head region)
Tissue depth confirmed as subcutaneous — distinguish from dermal/epidermal origin to justify 21011 over 1140x codes
Pathology or clinical description confirming soft tissue tumor origin (e.g., lipoma, epidermoid cyst)
Operative note specifying surgical approach and layers entered — avoid vague language like 'standard excision'
If complex repair billed same-day, document repair separately with dimensions and technique to support modifier 59

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 52 Reduced services 59 Distinct service 79 Unrelated during global 80 Assistant surgeon AS PA/NP/CNS assistant LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 6 cited references ↓

CPT 21011 covers the surgical removal of a subcutaneous (below the skin, above the muscle) tumor of the face or scalp when the lesion measures under 2 cm. This is a musculoskeletal excision code — not a skin excision code — which means the lesion must originate in the soft tissue beneath the dermis. Lipomas, epidermoid cysts, and other benign subcutaneous masses on the face or scalp are common targets. If the lesion is dermal or epidermal in origin, the 1140x series applies instead.

Size thresholds drive code selection across the 21011–21014 family. 21011 is the floor: subcutaneous, less than 2 cm. Cross 2 cm and you move to 21012; add depth into muscle or fascia and you're looking at 21013 or 21014 regardless of size. Measure the lesion itself, not the excision margin. The 90-day global period means all routine post-op visits, wound checks, and suture removals through day 90 are bundled — bill separately with modifier 24 or 79 only for unrelated encounters.

Top billing specialties are plastic and reconstructive surgery, otolaryngology, and ophthalmology — all of whom operate in the facial soft tissue space. When 21011 is billed with a complex repair code like 13132, NCCI edits trigger and modifier 59 is typically required to establish a distinct service. Document excision and repair separately and ensure the operative note supports both.

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 (2.92) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (11.83) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	2.92
Practice expense RVU	8.38
Malpractice RVU	0.53
Total RVU	11.83
Medicare national rate	$395.13
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	$395.13
HOPD (APC 5072) Hospital outpatient department	$1,687.37
ASC (PI P3) Ambulatory surgical center (freestanding)	$281.30

Common denial reasons

The recurring reasons claims for CPT 21011 get rejected.

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

Lesion coded as subcutaneous (21011) when documentation supports only dermal/epidermal origin — should be 1140x series
Size not documented or ambiguous, making it impossible to defend the code tier against an audit
Complex repair billed same-day without modifier 59, triggering NCCI bundling denial
Routine post-op visits billed within the 90-day global period without modifier 24 or 79
Site mismatch — lesion located on neck or non-facial head region coded with 21011 instead of the appropriate soft tissue excision code

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01What's the difference between 21011 and the 1140x skin excision codes?

The 1140x codes cover lesions of the skin and subcutaneous tissue measured by excised diameter including margins. 21011 covers soft tissue tumors originating below the dermis — subcutaneous layer — and is sized by the lesion itself, not the excision. If the lesion is a true soft tissue mass (lipoma, cyst with subcutaneous origin), 21011 is correct. If it's a skin tag, sebaceous cyst, or superficial lesion, 1140x applies.

02When does the lesion size push me to a different code?

21011 is capped at under 2 cm. At 2 cm or larger, bill 21012 for subcutaneous lesions. If the tumor is deep to fascia or within muscle, use 21013 (under 2 cm) or 21014 (2 cm or larger) regardless of surface size. Measure the lesion, not the excision defect.

03Can I bill a complex repair separately on the same day as 21011?

Yes, but NCCI edits bundle the repair into 21011 by default. To bill a complex repair code like 13132 separately, append modifier 59 to the repair code and document the repair independently in the operative note — its own dimensions, technique, and layer description. If the note just says the wound was closed after excision, the repair will deny.

04Does the 90-day global period apply to 21011?

Yes. 21011 carries a 90-day global period. Routine post-op wound checks, suture removal, and dressing changes within 90 days are bundled and not separately billable. For unrelated procedures or E/M visits in that window, append modifier 79 (unrelated procedure) or modifier 24 (unrelated E/M).

05Is modifier 50 ever appropriate for 21011?

Only if separate subcutaneous soft tissue tumors are excised on both sides of the face during the same session and each meets the criteria for 21011 independently. Document each lesion's size, location, and depth distinctly. Bilateral facial soft tissue excision is uncommon; payers may request records.

06Which diagnosis codes are typically paired with 21011?

ICD-10 codes from the D17.x (benign lipomatous neoplasm) and D23.x (benign neoplasm of skin — though verify subcutaneous origin) families are common. For uncertain behavior, D48.5 (neoplasm of uncertain behavior of skin) may apply. Match the ICD-10 code to the pathology report when available to avoid medical necessity denials.

Sources & references

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

Mira AI Scribe

Mira's AI scribe captures lesion size in centimeters, anatomic location on the face or scalp, tissue depth (subcutaneous versus dermal), and whether a same-day repair was performed with its own dimensions and technique. That documentation chain prevents the two most common denials: downcoding to a skin excision code because depth wasn't specified, and NCCI bundling rejections when a complex repair is billed without adequate support for modifier 59.

See how Mira captures CPT 21011 documentation