CPT 21210Surgery

Face bone graft

CPT code 21210 covers a surgical procedure where bone is grafted (transplanted) to the facial skeleton to repair defects, reconstruct areas after trauma or tumor removal, or augment facial contours. This is a complex procedure typically performed by oral and maxillofacial surgeons or plastic surgeons.

Showing rates for

National Average

Base Medicare rate

$1,694.63

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

11.69

PE RVU (NF)

39.55

MP RVU

1.15

Total RVU

52.39

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

NCCI bundling edits

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Billing tips

Document the donor site separately and consider billing for bone graft harvesting using appropriate codes (20900-20902) in addition to 21210 for graft placement
Impact: Can add $200-600 in additional reimbursement depending on harvesting site complexity; ensures complete compensation for all surgical work performed
Verify facility vs non-facility status before submission, as the reimbursement difference is $945.16 (56% reduction in facility setting)
Impact: Incorrect place of service coding results in automatic payment adjustment; non-facility rate of $1694.63 vs facility rate of $749.47
For complex reconstructions requiring multiple grafts or extensive contouring, document total operative time, distinct anatomic sites, and increased complexity to support modifier 22
Impact: Well-documented modifier 22 claims can increase reimbursement by $340-500 (20-30% above base rate); requires detailed operative report and cover letter
When performed with orthognathic surgery or other facial skeletal procedures, ensure 21210 is not bundled into comprehensive codes like 21141-21147; bill separately when graft is distinct
Impact: Prevents loss of $749-1695 in reimbursement from inappropriate bundling; review NCCI edits quarterly
Distinguish between bone graft (21210) and alloplastic implant placement (21270) in documentation, as payers frequently confuse these procedures
Impact: Correct code selection ensures appropriate payment; autogenous bone graft (21210) versus synthetic implant requires different documentation and reimbursement differs significantly
For trauma cases, link to appropriate ICD-10 codes for facial fractures or defects and document medical necessity clearly to differentiate from cosmetic procedures

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 21210 in 2025?

The 2025 Medicare national average reimbursement for CPT 21210 is $1694.63 for non-facility settings and $749.47 for facility settings. The significant difference reflects the practice expense costs associated with performing this procedure in an office-based surgical suite versus a hospital. Actual reimbursement may vary based on geographic locality adjustments.

Can CPT 21210 be billed with bone graft harvesting codes?

Yes, CPT 21210 describes the placement of bone graft to the facial skeleton, while codes 20900-20902 describe the harvesting of bone graft from the donor site. These are separately reportable procedures when both harvesting and placement are performed. Documentation must clearly detail both the harvesting procedure and the facial grafting procedure to support billing both codes.

What documentation is required to avoid denials for CPT 21210?

Essential documentation includes medical necessity justification (congenital defect, trauma, oncologic reconstruction, or functional impairment), detailed operative report describing donor site, harvesting technique, graft dimensions, recipient site preparation, fixation method, and closure. Preoperative imaging and photographs help establish medical necessity and distinguish reconstructive from cosmetic procedures. The operative report must clearly describe the bone grafting as a distinct procedure.

Is CPT 21210 covered for cosmetic facial augmentation?

Generally no. Medicare and most commercial payers cover CPT 21210 only for medically necessary reconstructive procedures following trauma, tumor resection, congenital deformities, or functional impairment. Purely cosmetic facial augmentation is typically not covered. Documentation must establish functional deficit or reconstructive need rather than aesthetic enhancement alone. Pre-authorization is strongly recommended when cosmetic vs reconstructive distinction may be questioned.

What are the Work RVUs for CPT code 21210?

CPT 21210 has 11.69 work RVUs, reflecting the physician work involved in performing facial bone grafting. The total RVU value is 52.39, which includes work RVUs (11.69), non-facility practice expense RVUs (39.55), and malpractice RVUs (1.15). The high total RVU reflects the complexity, skill, and time required for this surgical procedure.

How do you bill CPT 21210 for bilateral facial bone grafts?

For bilateral facial bone grafting performed during the same operative session, append modifier 50 to CPT 21210. This indicates a bilateral procedure and typically results in 150% of the base reimbursement (approximately $2541.95 for non-facility Medicare). Documentation must clearly describe grafting to both sides of the face and justify medical necessity for bilateral treatment. Some payers may require billing the code twice with LT and RT modifiers instead.

What is the difference between CPT 21210 and 21215?

CPT 21210 describes bone graft to the facial skeleton using autogenous (patient's own) bone, while CPT 21215 describes graft to the mandible using autogenous bone specifically. Code 21215 is more specific to mandibular grafting procedures, while 21210 applies to facial bones generally (maxilla, zygoma, orbit, etc.). Proper code selection depends on the specific anatomic location and extent of grafting. Review operative documentation carefully to determine which code most accurately reflects the procedure performed.