Exc back tum deep < 5 cm

CPT code 21932 covers the surgical removal of a deep tumor in the back area that is smaller than 5 centimeters in size. This is a more complex procedure than removing surface-level growths because it requires cutting through multiple tissue layers to reach tumors embedded in deeper structures.

Showing rates for

National Average

Base Medicare rate

$655.66

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

9.82

PE RVU (NF)

8.21

MP RVU

2.24

Total RVU

20.27

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Measure and document tumor size intraoperatively with precise measurements in centimeters in three dimensions to support the <5cm size requirement
Impact: Prevents downcoding to superficial excision codes (11400 series) which pay approximately $150-250 less; protects full $655.66 reimbursement
Clearly document depth of dissection including fascial layers penetrated and anatomic structures encountered to distinguish from superficial excisions
Impact: Essential for claim support; lack of depth documentation results in 40-60% denial rate with downcode to 11406 at approximately $200-300 lower payment
Submit pathology report with claim or within 30 days confirming tumor type and supporting medical necessity for deep excision
Impact: Reduces denial rate by approximately 35%; pathology confirmation strengthens appeals for initially denied claims
Bill facility versus non-facility setting appropriately; for 21932 both rates are identical at $655.66, so verify place of service code matches actual location
Impact: Although payment is equal for this code, incorrect POS can trigger audit flags and delay payment by 15-30 days
When multiple tumors are excised from different anatomic sites during same session, report each tumor separately with appropriate modifier 59 or distinct anatomic site
Impact: Captures additional $655.66 per separate tumor excision versus bundled payment; can increase total reimbursement by $600-1,300 for multi-tumor cases
Do not combine 21932 with intermediate or complex closure codes (12031-13160) as closure is included in the surgical package

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 21932 in 2025?

The 2025 Medicare national average reimbursement for CPT 21932 is $655.66 for both facility and non-facility settings. This rate is based on 20.27 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by geographic locality based on the Geographic Practice Cost Index (GPCI) adjustments for your area.

What is the difference between CPT 21932 and superficial excision codes?

CPT 21932 is for deep subfascial tumors requiring dissection below the fascial plane, while superficial excision codes (11400-11406 series) are for skin and subcutaneous lesions above the fascia. The key distinction is depth of dissection and anatomic layer involvement. Deep excisions (21932) have significantly higher RVUs (20.27) compared to superficial excisions (typically 2-4 RVUs) and require documentation of fascial layer penetration.

Can CPT 21932 be billed with an E/M code on the same day?

An E/M code can be billed on the same day as 21932 only if a separate, significant, and identifiable evaluation beyond the normal pre-procedural assessment is performed and documented. Use modifier 25 on the E/M code. However, routine pre-operative history and examination directly related to the decision for surgery are included in the surgical package and cannot be separately billed.

What size tumor requires using CPT 21933 instead of 21932?

CPT 21933 is used when the deep back tumor measures 5 centimeters or greater in its greatest dimension. CPT 21932 is strictly for tumors less than 5 cm. Accurate intraoperative measurement documentation is critical, as the size threshold determines which code to bill and significantly affects reimbursement levels.

How many RVUs is CPT code 21932 worth?

CPT 21932 has a total RVU value of 20.27 for 2025, consisting of 9.82 work RVUs, 8.21 practice expense RVUs (both facility and non-facility), and 2.24 malpractice RVUs. This relatively high RVU value reflects the surgical complexity and time required for deep tumor excision with subfascial dissection.

Does CPT 21932 include wound closure in the reimbursement?

Yes, CPT 21932 includes all layered wound closure as part of the surgical package. You cannot separately bill intermediate (12031-12057) or complex closure codes (13100-13153) when performed as part of closing the excision site. The closure work is already reflected in the 20.27 total RVUs and $655.66 Medicare payment.

What documentation is needed to justify billing CPT 21932 versus a lower-level excision code?

Essential documentation includes: (1) explicit statement that tumor is subfascial or deep to fascial plane, (2) intraoperative measurements confirming size <5cm, (3) description of fascial layers incised and anatomic depth reached, (4) layered closure details, and (5) pathology report confirming tumor diagnosis. Without clear depth documentation, payers commonly downcode to superficial excision codes paying $200-400 less.