CPT 21040Surgery

Excise mandible lesion

CPT code 21040 is used when a surgeon removes a lesion (abnormal growth or tissue) from the mandible, which is your lower jawbone. This is a surgical procedure that involves cutting into the jaw to remove the problematic tissue.

Showing rates for

National Average

Base Medicare rate

$453.50

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

4.91

PE RVU (NF)

8.61

MP RVU

0.5

Total RVU

14.02

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

NCCI bundling edits

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Billing tips

Verify facility versus non-facility status before submitting claim to capture the $95.75 payment differential
Impact: Incorrect place of service coding results in automatic $95.75 underpayment (21% reduction) that often goes unnoticed and cannot be retroactively corrected after timely filing deadlines
Document lesion size, exact location on mandible (body, angle, ramus, symphysis), and depth of excision with photographic or radiographic evidence
Impact: Detailed documentation supports medical necessity and prevents denials; also justifies modifier 22 for complex cases which can increase payment by $90-$225
Bill bone grafting or complex reconstruction separately using appropriate CPT codes (21210, 21215) when performed, as these are not included in 21040
Impact: Failing to separately code grafting procedures results in undercharging by $400-$800 per case; ensure modifier 51 is properly applied
Verify pathology report is available before final claim submission to confirm lesion diagnosis matches pre-operative indication
Impact: Discrepancies between pre-op diagnosis and pathology can trigger medical necessity denials requiring time-consuming appeals; matching documentation reduces denial rate by approximately 15%
For Medicare patients, confirm that the lesion meets criteria for surgical excision rather than observation, as payer may deny if conservative management was not attempted
Impact: Lack of documentation showing progression, symptoms, or malignancy risk results in 20-30% denial rate on first submission
When performed in ASC setting, ensure facility also bills with appropriate ASC payment indicator to maximize total reimbursement

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 21040 in 2025?

Medicare pays $453.50 for CPT 21040 when performed in a non-facility setting (physician office with surgical capability) and $357.75 when performed in a facility setting (hospital or ASC) under the 2025 fee schedule. The difference of $95.75 reflects the facility overhead costs that are paid separately to the facility rather than the physician.

Does CPT 21040 include bone grafting or reconstruction?

No, CPT 21040 only includes the excision of the mandibular lesion and minor bone contouring necessary for closure. If bone grafting, reconstruction, or mandibular stabilization is required, you must bill additional CPT codes such as 21210 (graft, first 20 cm or less), 21215 (graft, each additional 20 cm), or other reconstruction codes as appropriate with modifier 51 for multiple procedures.

Can I bill 21040 with a dental extraction code on the same day?

This depends on whether the extraction is directly related to the lesion excision or is a separate, distinct procedure. If teeth must be extracted to access the lesion, this is typically considered part of the surgical approach and included in 21040. If extracting teeth unrelated to the lesion access in a different area of the mouth, you may bill separately with modifier 59, but documentation must clearly support the distinct nature of the services.

What documentation is required to prove medical necessity for CPT 21040?

You must document radiographic evidence of the lesion (panoramic x-ray, CT, or MRI), clinical symptoms (pain, swelling, infection, dysfunction) or evidence of growth/progression over time, and justification for surgical versus conservative management. For asymptomatic lesions, documentation should address malignancy risk, potential for pathologic fracture, or other compelling clinical reasons for surgical intervention. A pre-operative biopsy report, if performed, strengthens medical necessity.

How many RVUs is CPT code 21040 worth in 2025?

CPT 21040 has a total of 14.02 RVUs in 2025, consisting of 4.91 work RVUs, 8.61 non-facility practice expense RVUs (5.65 for facility), and 0.50 malpractice RVUs. The work RVU of 4.91 reflects the physician effort, skill, and time involved in performing the mandibular lesion excision.

Is CPT 21040 subject to a global surgical period?

Yes, CPT 21040 carries a 90-day global surgical period, meaning all routine post-operative care for 90 days following the procedure is included in the reimbursement and should not be billed separately. This includes normal follow-up visits, wound checks, and suture removal. Complications or unrelated services during this period may be billable with appropriate modifiers (24 for unrelated E/M, 78 for related return to OR, 79 for unrelated procedure).

What is the difference between CPT 21040 and 21030 for jaw lesions?

CPT 21030 is for excision of a benign tumor or cyst of the maxilla (upper jaw) or zygoma (cheekbone), while 21040 specifically describes excision from the mandible (lower jaw). These are anatomically distinct procedures and should not be confused. Always verify the exact location of the lesion in the operative report to select the correct code. Using the wrong code based on jaw location will result in claim denial or request for medical records.