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CPT 20912Surgery

Remove cartilage for graft

CPT 20912 covers the surgical removal of cartilage from one part of the body to be used as a graft (transplant) in another area. This is a harvesting procedure where the surgeon takes healthy cartilage tissue, typically from the rib or ear, to repair damaged areas elsewhere.

Showing rates for

National Average

Base Medicare rate

$474.20

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

6.54

PE RVU (NF)

7.11

MP RVU

1.01

Total RVU

14.66

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

NCCI bundling edits

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Billing tips

Always bill 20912 in addition to the primary reconstructive procedure code, never as a standalone service without justification
Impact: Prevents automatic denial; ensures proper payment for both harvesting ($474.20) and primary procedure when documented as separate, medically necessary services
Document the exact harvest site (specific rib number, right/left ear, etc.), quantity of cartilage harvested, and closure method in the operative note
Impact: Reduces audit risk by 60-70% and supports medical necessity; lack of specificity is the #1 reason for postpayment recoupment of the $474.20 reimbursement
Check NCCI edits before billing 20912 with the primary procedure code; use modifier 59 only when documentation supports separate site or distinct service
Impact: Inappropriate modifier 59 usage triggers prepayment review or denial; proper usage secures full $474.20 payment versus complete denial
For costal cartilage harvest, ensure documentation differentiates between simple harvest (20912) and complex procedures involving multiple ribs or extensive dissection that may warrant modifier 22
Impact: Modifier 22 with proper documentation can increase reimbursement by $94.84-$237.10 for significantly increased work; submit operative note and cover letter comparing to typical case
Verify whether your payer requires modifier 51 for multiple procedures or applies it automatically; some payers reject claims with manually appended modifier 51
Impact: Prevents processing delays and resubmission cycles; ensures predictable reimbursement calculation (typically 50% reduction to $237.10 as secondary procedure)
For Medicare patients, confirm the facility versus non-facility status matches the actual place of service; 20912 has identical rates ($474.20) but documentation requirements differ

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Common denials

Bundled/inclusive to primary procedure - denial code CO-97 or similar indicating 20912 is included in the primary reconstruction code payment

How to appeal: Submit operative note highlighting separate incision, distinct anatomical site, and additional time/work beyond the primary procedure. Reference NCCI manual chapter on grafting procedures showing 20912 is separately reportable with modifier when criteria met. Include comparison of times for each component and anatomical diagrams.

Insufficient documentation of medical necessity - payer states the operative note does not justify separate cartilage harvesting procedure

How to appeal: Provide complete operative note with highlighted sections showing: harvest site, closure of donor site, quantity of cartilage obtained, and time spent on harvesting versus reconstruction. Include clinical rationale for autologous versus allograft cartilage selection. Submit literature supporting medical necessity for autogenous graft in the specific clinical scenario.

Modifier 59 not supported - denial indicating distinct procedural service criteria not met or inappropriate unbundling

How to appeal: Document separate anatomical site with clear description and/or distinct session. Provide anatomical drawings showing primary procedure site versus harvest site. If temporal separation exists, include detailed timeline from operative note. Reference CMS modifier 59 guidance and demonstrate how the case meets at least one of the four criteria for modifier application.

Duplicate service/procedure - system flags 20912 as previously paid or included in another service on same date

How to appeal: Submit itemized operative note showing 20912 represents distinct harvesting not captured by other codes billed. Provide CPT code descriptors for all procedures performed demonstrating each represents unique service. Include facility records confirming single procedure date with multiple distinct components. Request claims review showing no actual duplicate payment occurred.

Frequently asked questions

What is the Medicare reimbursement rate for CPT 20912 in 2025?

The 2025 Medicare national average reimbursement for CPT 20912 is $474.20 for both facility and non-facility settings. This rate is based on 14.66 total RVUs (6.54 work RVU, 7.11 practice expense RVU, and 1.01 malpractice RVU) multiplied by the 2025 conversion factor of 32.3465.

Can CPT 20912 be billed separately from the primary reconstructive procedure?

Yes, CPT 20912 can be billed separately when the cartilage harvesting represents a distinct procedural service at a separate anatomical site or meets criteria for modifier 59 application. However, you must check NCCI edits for the specific primary procedure code, document the separate work clearly, and ensure the harvesting is not inherently included in the primary procedure descriptor.

What modifiers are most commonly used with CPT code 20912?

The most commonly used modifiers with 20912 are modifier 59 (distinct procedural service to bypass NCCI edits), modifier 51 (multiple procedures), modifier 50 (bilateral procedure when harvesting from both sides), and RT/LT (right/left side designation). Modifier 22 may be appropriate when harvesting is significantly more complex than typical cases.

What documentation is required to bill CPT 20912 without denial?

Required documentation includes the specific anatomical donor site, separate incision description, quantity of cartilage harvested, harvesting technique details, donor site closure method, distinct operative time when billed separately, and medical necessity justification for autologous graft. The operative note must clearly differentiate the harvesting work from the primary reconstructive procedure.

Is CPT 20912 bundled with rhinoplasty or ear reconstruction codes?

CPT 20912 often has NCCI edits with rhinoplasty (30400-30420) and ear reconstruction codes (69300, 69310), but it can be unbundled with modifier 59 when documentation supports a distinct procedural service. The key is demonstrating that cartilage harvesting required separate incision, significant additional work, and was not a routine component of the primary procedure as typically performed.

What is the difference between CPT 20910 and 20912?

CPT 20910 covers removal of bone for grafting (minor or small procedure), while CPT 20912 covers removal of cartilage for grafting. The codes represent different tissue types harvested: 20910 is for bone graft procurement and 20912 is specifically for cartilage procurement. They cannot be billed together when harvesting from the same anatomical structure.

How many RVUs is CPT code 20912 worth in 2025?

CPT 20912 has a total of 14.66 RVUs in 2025, consisting of 6.54 work RVUs, 7.11 practice expense RVUs (both facility and non-facility), and 1.01 malpractice RVUs. These values are from the CMS Medicare Physician Fee Schedule RVU25A released December 23, 2024.