CPT 21451Surgery

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CPT 21451 covers the treatment of a broken jaw (mandible fracture) using manual manipulation without surgical incision. The provider realigns the fractured bone segments by hand and typically applies fixation devices to stabilize the jaw.

Showing rates for

National Average

Base Medicare rate

$746.88

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

5.65

PE RVU (NF)

16.9

MP RVU

0.54

Total RVU

23.09

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

NCCI bundling edits

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Billing tips

Verify place of service carefully - facility vs non-facility setting creates $123.24 payment difference
Impact: Incorrect POS code results in $123.24 underpayment (16.5% difference between $746.88 and $623.64)
Document the specific manipulation technique, number of attempts, and complexity factors (displacement degree, comminution, multiple fragments) to support medical necessity
Impact: Inadequate documentation of manipulation effort may trigger downcoding to 21450 (without manipulation) losing $250-350 in reimbursement
Bill arch bar application separately with CPT 21110 when IMF is required as part of fracture stabilization
Impact: 21110 adds approximately $350-450 to case reimbursement when properly documented as distinct procedure
For emergency department scenarios, ensure the rendering provider NPI matches the credentialed surgeon who performed manipulation, not the ED physician who may have initially evaluated
Impact: Provider credentialing mismatches cause 15-25% of initial claim denials requiring costly resubmission
When treating multiple fracture sites during same session, review NCCI edits carefully - additional fracture treatments may require modifier 59 or XS to bypass bundling
Impact: Unbundling properly documented separate fractures can add $400-800 per additional site
Appeal denials for 'lack of medical necessity' with comparative CT imaging showing pre- and post-manipulation alignment improvement and notation of displacement measurements
Impact: Visual evidence increases appeal success rate from 40% to 75% based on specialty society data

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Frequently asked questions

What is the Medicare payment for CPT 21451 in 2025?

Medicare pays $746.88 for CPT 21451 in non-facility settings and $623.64 in facility settings based on the 2025 Physician Fee Schedule. The difference reflects practice expense variations between office-based and hospital-based care.

What is the difference between CPT 21450 and 21451?

CPT 21450 covers closed treatment of mandibular fracture without manipulation (simple immobilization only), while 21451 includes manual manipulation to reduce the fracture fragments. Code 21451 requires documentation of active manipulation efforts and typically reimburses $250-350 more than 21450.

Can CPT 21451 be billed with arch bar application code 21110?

Yes, CPT 21110 (application of interdental fixation device) can be billed separately with 21451 when intermaxillary fixation is required for stabilization. However, documentation must show the arch bar application as a distinct procedure beyond the fracture manipulation itself. Some payers may bundle these codes, requiring modifier 59 with supporting documentation.

How many RVUs is CPT code 21451 worth?

CPT 21451 has 23.09 total RVUs in 2025, consisting of 5.65 work RVUs, 16.90 practice expense RVUs (non-facility), and 0.54 malpractice RVUs. In facility settings, the PE RVU drops to 13.09 for a facility total of 19.28 RVUs.

What diagnosis codes support medical necessity for CPT 21451?

Primary supporting diagnosis codes include S02.609A (unspecified mandible fracture, initial encounter), S02.600A (fracture of unspecified part of body of mandible), S02.610A (fracture of condylar process), S02.620A (fracture of subcondylar process), S02.630A (fracture of coronoid process), S02.640A (fracture of ramus), S02.650A (fracture of angle), and S02.670A (fracture of alveolus). Seventh character indicates encounter type.

Is CPT 21451 a bilateral procedure code?

CPT 21451 is inherently unilateral. For bilateral mandibular fractures requiring manipulation on both sides, you may append modifier 50 for bilateral procedure, though mandible anatomy may not always support true bilateral coding. More commonly, multiple fracture sites are coded separately with anatomically specific codes and appropriate modifiers to prevent bundling.

What is the global period for CPT 21451?

CPT 21451 has a 90-day global surgical period. This means all routine postoperative care for 90 days following the procedure is included in the reimbursement and cannot be billed separately. Complications or unrelated conditions during this period may be billed with modifier 24 for E/M services or modifier 78/79 for return to OR.