CPT 11313Surgery

Shave skin lesion >2.0 cm

CPT 11313 covers the shaving (tangential removal) of a skin lesion larger than 2.0 centimeters in diameter. This is a superficial removal technique that doesn't require stitches, used for raised lesions like moles, warts, or skin tags.

Showing rates for

National Average

Base Medicare rate

$174.35

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

1.68

PE RVU (NF)

3.53

MP RVU

0.18

Total RVU

5.39

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

NCCI bundling edits

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Billing tips

Measure and document lesion size before local anesthesia administration, as anesthetic infiltration can distort tissue and artificially increase dimensions
Impact: Prevents downcoding from 11313 ($174.35) to 11312 ($141.87) if post-anesthesia measurement appears smaller; can protect $32+ per procedure
Bill based on place of service carefully—POS 11 (office) yields $174.35 vs POS 22 (hospital outpatient) at $92.51, an $81.84 difference
Impact: Incorrect POS coding can result in automatic adjustment to lower facility rate, reducing revenue by 47%
When multiple shave removals are performed, list 11313 first if it's the largest lesion, then append subsequent codes (11310-11312) with modifier 51 or let payer apply multiple surgery reduction
Impact: Primary procedure receives 100% payment ($174.35); subsequent procedures paid at 50%, maximizing appropriate reimbursement
Document medical necessity clearly—cosmetic removal is typically non-covered; include symptoms (bleeding, irritation, growth) or concern for malignancy
Impact: Prevents medical necessity denials; difference between $174.35 reimbursement and $0 patient-pay cosmetic procedure
Submit pathology report with appeals if denied as 'not medically necessary'—confirmed dysplasia or malignancy retrospectively establishes medical need
Impact: Overturn rate for appeals with pathology support exceeds 60%; recovers full $174.35 payment
Use diagnosis codes that support medical necessity: L82.1 (seborrheic keratosis), D22.x (melanocytic nevi), or C44.x (skin malignancy) rather than cosmetic codes
Proper ICD-10 selection reduces denial rate by approximately 30-40% for dermatologic procedures

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 11313 in 2025?

The 2025 Medicare national average reimbursement for CPT 11313 is $174.35 for non-facility (office) settings and $92.51 for facility settings. These rates are based on the total RVU of 5.39 multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by MAC jurisdiction and geographic locality adjustments.

How do I determine if a lesion qualifies for CPT 11313 versus 11312?

CPT 11313 requires the lesion diameter to exceed 2.0 cm, while 11312 covers lesions 1.1 to 2.0 cm. Measure the lesion at its greatest diameter before administering local anesthesia, as anesthetic can distort size. Use calipers or a ruler and document the specific measurement in your operative note (e.g., '2.3 cm'). The clinical measurement, not the pathology specimen size, determines code selection.

Can I bill an E/M visit on the same day as CPT 11313?

Yes, you can bill an E/M service with CPT 11313 on the same day if the E/M represents a significant, separately identifiable service beyond the decision to perform the shave removal. You must append modifier 25 to the E/M code and document a distinct evaluation addressing other medical issues, not just the lesion examination and removal decision.

What diagnosis codes support medical necessity for CPT 11313?

Medically necessary diagnosis codes include L82.1 (seborrheic keratosis), D22.x (melanocytic nevi by site), D23.x (other benign neoplasms of skin), L72.x (follicular cysts), C44.x (skin malignancy by site), and D04.x (carcinoma in situ of skin). Document clinical reasons such as bleeding, irritation, rapid growth, color changes, or diagnostic uncertainty. Purely cosmetic concerns (L70.0 without symptoms) typically result in denial.

How many times can CPT 11313 be billed on the same day?

CPT 11313 can be billed multiple times on the same day if you remove multiple lesions exceeding 2.0 cm at different anatomic sites. List each procedure separately, typically with the largest or most complex lesion first, and append modifier 59 to subsequent procedures to indicate distinct sites. Medicare and most payers apply multiple surgery reduction rules (50% payment for second and subsequent procedures of the same code).

What is the global period for CPT 11313?

CPT 11313 has a 10-day global period. This means routine follow-up care within 10 days post-procedure is included in the payment and should not be separately billed. If a complication requires a return to the procedure room during this period for a related issue, use modifier 78. For an unrelated procedure during the global period, use modifier 79.

Does the pathology specimen size need to match the clinical size documented for CPT 11313?

No, pathology specimen size is typically smaller than clinical lesion size due to tissue retraction and processing. CPT guidelines specify that code selection should be based on the clinical size measured before removal, not the pathology specimen dimensions. Always document your pre-procedure clinical measurement in the operative note. If questioned, explain that formalin fixation causes tissue shrinkage of 10-30%.