CPT 21193Surgery

Reconst lwr jaw w/o graft

CPT code 21193 covers surgical reconstruction of the lower jaw (mandible) without using a bone graft, typically performed to repair defects, fractures, or deformities using existing bone structure.

Showing rates for

National Average

Base Medicare rate

$1,197.47

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

18.9

PE RVU (NF)

16.2

MP RVU

1.92

Total RVU

37.02

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

NCCI bundling edits

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Billing tips

Document whether bone graft was used; if any graft material (autogenous, allogeneic, or synthetic) is utilized, use 21194 instead of 21193
Impact: Incorrect code selection results in underpayment or denial; 21194 reimburses higher at $1366.40 due to additional complexity
Bill separately for surgical approach if performed through extraoral incision requiring separate operative work; consider 21141-21145 for mandibular access procedures if documented as distinct
Impact: Potential additional $400-800 reimbursement when approach is separately identifiable and medically necessary
Hardware costs (plates, screws, fixation devices) should be billed separately using appropriate supply codes or included in facility charges; verify if implants are included in global surgical fee or separately reimbursable
Impact: Implant costs range $2000-5000; proper billing recovers significant material expenses
Link appropriate diagnosis codes documenting medical necessity: traumatic fractures (S02.6xx), congenital anomalies (Q67.4), or pathologic conditions (M27.8); avoid cosmetic diagnosis codes
Impact: Cosmetic indications result in automatic denial; medically necessary indications ensure payment
Submit operative report highlighting osteotomy sites, fixation method, measurement of defect size, and reconstruction technique within 48 hours of surgery for high-value claims
Impact: Proactive documentation submission reduces payment delays by 30-45 days and decreases audit risk
For hospital-based procedures, verify Medicare pays identical facility and non-facility rates ($1197.47); negotiate with commercial payers using this data as floor rate with typical multipliers of 150-300%

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Frequently asked questions

What is the difference between CPT 21193 and 21194?

CPT 21193 is for mandibular reconstruction WITHOUT bone graft material, using only existing bone structure with repositioning and fixation. CPT 21194 includes the use of autogenous, allogeneic, or synthetic bone graft material during reconstruction. The presence of any graft material requires coding 21194 ($1366.40 Medicare rate) instead of 21193 ($1197.47).

How much does Medicare pay for CPT code 21193 in 2025?

Medicare pays $1197.47 for CPT 21193 in 2025 based on the national average rate. This rate is identical for both facility and non-facility settings. The total RVU is 37.02 multiplied by the 2025 conversion factor of 32.3465.

What diagnosis codes support medical necessity for CPT 21193?

Medically necessary diagnoses include traumatic mandibular fractures (S02.6xx series), congenital mandibular anomalies (Q67.4), developmental jaw disorders (M27.0), pathologic fractures (M84.4xx), post-ablative defects from tumor resection, and severe mandibular asymmetry causing functional impairment in mastication or speech. Cosmetic diagnoses will result in denial.

Can CPT 21193 be billed with modifier 22 for increased complexity?

Yes, modifier 22 is appropriate when mandibular reconstruction involves significantly greater complexity than typical cases, such as revision surgery with extensive scarring, severe anatomical distortion, or procedures requiring 25% or more additional operative time. Documentation must clearly detail the additional work, with comparative operative time and specific complications encountered. This can increase reimbursement by 20-50%.

What specialties typically bill CPT code 21193?

Oral and maxillofacial surgeons most commonly bill 21193, followed by plastic and reconstructive surgeons specializing in craniofacial procedures, head and neck surgeons (otolaryngology), and specialized craniofacial surgeons. Providers must have appropriate board certification and hospital privileges for complex maxillofacial reconstruction procedures.

Is CPT 21193 bundled with fracture reduction codes?

CPT 21193 represents comprehensive mandibular reconstruction and typically includes treatment of associated fractures. Simple fracture reduction codes (21451-21465) should not be separately billed for the same anatomical segment. However, if fracture treatment occurs at a distinct mandibular site from the reconstruction, modifier 59 or anatomical modifiers may allow separate billing with appropriate documentation.

What are the RVU values for CPT 21193 in 2025?

CPT 21193 has a Work RVU of 18.9, Practice Expense RVU of 16.2 (both facility and non-facility), and Malpractice RVU of 1.92, totaling 37.02 RVUs. This high RVU value reflects the significant surgical skill, time, and complexity involved in mandibular reconstruction procedures.