CPT 21422Surgery

Optx palatal/max fracture

CPT code 21422 covers the surgical treatment of a broken palate (roof of the mouth) or upper jaw bone (maxilla) using an open approach to realign and stabilize the fractured bones.

Showing rates for

National Average

Base Medicare rate

$620.08

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

8.73

PE RVU (NF)

9.18

MP RVU

1.26

Total RVU

19.17

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

NCCI bundling edits

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Billing tips

Document fracture displacement, comminution pattern, and number of fracture segments in operative report to justify open versus closed treatment
Impact: Prevents downcoding to 21421 (closed treatment at $274.32), protecting $345.76 in reimbursement difference
Separately report bone graft procedures (21210, 20900-20902) when autogenous or allograft bone is used for maxillary reconstruction
Impact: Additional $200-$500 reimbursement when documented as distinct procedure with separate incision and graft harvest
Use modifier 22 with comprehensive documentation when treating severely comminuted LeFort fractures or panfacial trauma requiring extended operative time
Impact: Potential additional $124-$310 (20-50% increase) when supported by comparison to typical case complexity and operative time documentation
Bill for hardware removal (20670) separately if performed more than 90 days after initial fracture repair
Impact: Captures $180-$250 additional reimbursement for planned hardware removal outside global period
Verify and document associated procedures like nasal fracture repair (21325-21336) or zygomatic fracture repair (21355-21366) as separate line items when applicable
Impact: Multi-fracture documentation can increase total case reimbursement by $500-$1,500 depending on complexity
Submit with appropriate ICD-10 codes specifying fracture location (S02.40-S02.42) and encounter type (A for initial, D for subsequent) to avoid claim rejections
Impact: Reduces denial rate by 15-25% and eliminates need for claim resubmission and payment delays

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 21422 in 2025?

The 2025 Medicare national average reimbursement for CPT 21422 is $620.08 for both facility and non-facility settings, based on 19.17 total RVUs and a conversion factor of 32.3465.

What is the difference between CPT 21421 and 21422 for maxillary fracture treatment?

CPT 21421 covers closed treatment of palatal or maxillary fractures without manipulation or with simple stabilization, while 21422 requires open surgical treatment with direct visualization, reduction, and internal or external fixation. The reimbursement difference is approximately $345.76, making proper documentation of the open approach critical.

Can CPT 21422 be billed with other facial fracture repair codes?

Yes, CPT 21422 can be billed with other facial fracture codes (such as nasal, zygomatic, or orbital fracture repairs) when treating distinct fracture sites with separate reduction and fixation work. Use modifier 51 for multiple procedures and ensure documentation clearly establishes independent work for each anatomic location.

What documentation is required to bill CPT 21422 successfully?

Required documentation includes pre-operative diagnosis with fracture location, detailed description of displacement/comminution, surgical approach details, specific reduction techniques, complete fixation method with hardware specifications (type, size, number, placement), post-reduction occlusion assessment, and operative time. Insufficient hardware documentation is a common denial reason.

How many RVUs is CPT code 21422 worth?

CPT 21422 has 19.17 total RVUs for 2025, consisting of 8.73 work RVUs, 9.18 practice expense RVUs (both facility and non-facility), and 1.26 malpractice RVUs, reflecting the significant surgical work and risk involved in open maxillary fracture repair.

When should modifier 22 be used with CPT 21422?

Modifier 22 should be appended to CPT 21422 when fracture complexity significantly exceeds typical cases, such as severe comminution, extensive soft tissue injury, panfacial trauma, or unusual anatomic challenges requiring substantially increased operative time and work. Documentation must compare the case to typical 21422 procedures and quantify additional work to justify 20-50% payment increase.

What ICD-10 codes are commonly used with CPT 21422?

Common ICD-10 codes include S02.401A-S02.402A (maxillary fracture, initial encounter), S02.411A-S02.412A (LeFort I fracture), S02.421A-S02.422A (LeFort III fracture), and S02.8XXA (other facial bone fractures). Use seventh character 'A' for initial surgical treatment, 'D' for subsequent encounters during healing, and specify laterality when applicable.