CPT 20956
Global 090 ActiveIliac bone graft microvasc
CPT 20956 Billing & Documentation Guide
CPT code 20956 (Iliac bone graft microvasc) is classified under Surgery (Musculoskeletal) with a global period indicator of 090. The 2026 Medicare Physician Fee Schedule assigns a work RVU of 40.15, a non-facility practice expense RVU of 21.79, and a malpractice RVU of 8.58, a total non-facility RVU of 70.52 and facility RVU of 70.52. With the current conversion factor of $33.4009, the national average non-facility reimbursement is approximately $2373.31, though rates vary from $2113.82 to $2944.59 based on MAC locality and Geographic Practice Cost Indices (GPCIs).
When billing 20956, ensure documentation supports medical necessity and the specific components required for the code's level of service. For E/M codes, document MDM (medical decision-making) elements: problems addressed, data reviewed, and risk. For procedural codes, document the indication, technique, and any complications. Always verify NCCI edits before bundling 20956 with related codes; this code has 10 PTP bundling relationships on file (see table below).
Payment Status & Global Period
Active code (paid under MPFS)
90-day global period (major surgery: 1 day pre-op + procedure + 90 days post-op)
MUE Limit (Medically Unlikely Edits)
Submitting more than 1 units of 20956 for the same patient on the same date triggers automatic line denial unless an appropriate modifier and supporting documentation justify the higher quantity.
RVU Breakdown, CPT 20956
| Component | Non-Facility | Facility |
|---|---|---|
| Work RVU | 40.15 | 40.15 |
| Practice Expense RVU | 21.79 | 21.79 |
| Malpractice RVU | 8.58 | 8.58 |
| Total RVU | 70.52 | 70.52 |
| Conversion Factor | $33.4009 | |
2026 Medicare Reimbursement by State, CPT 20956
State-level averages across all MAC localities. Non-facility rates typically apply to office-based services; facility rates apply to hospital outpatient / inpatient.
| State | Non-Facility | Facility | Range (Non-Fac) | Localities |
|---|---|---|---|---|
| California | $2405.71 | $2405.71 | $2315.13 - $2691.66 | 29 |
| Florida | $2629.15 | $2629.15 | $2467.56 - $2823.45 | 3 |
| Georgia | $2380.27 | $2380.27 | $2331.85 - $2428.7 | 2 |
| Illinois | $2596.64 | $2596.64 | $2453.46 - $2739.58 | 4 |
| Michigan | $2427.82 | $2427.82 | $2329.08 - $2526.55 | 2 |
| North Carolina | $2203.21 | $2203.21 | $2203.21 - $2203.21 | 1 |
| New York | $2606.19 | $2606.19 | $2233.93 - $2824.41 | 5 |
| Ohio | $2294.41 | $2294.41 | $2294.41 - $2294.41 | 1 |
| Pennsylvania | $2372.35 | $2372.35 | $2279.99 - $2464.72 | 2 |
| Texas | $2331.14 | $2331.14 | $2269.58 - $2468.82 | 8 |
Source: CMS PFSRVU 2026 · Updated 2026-04-01. Full locality-level detail available for all 53 states, contact us for custom reports.
NCCI Bundling Edits, CPT 20956
Procedure-to-procedure (PTP) edits. If you bill any of these codes with 20956 on the same date of service, review the modifier indicator and payer policy before submission.
| Partner Code | Relationship | Modifier Allowed | Rationale |
|---|---|---|---|
| 0213T | Column 1 (primary), can be billed with modifier | No | Misuse of Column Two code with Column One code |
| 0216T | Column 1 (primary), can be billed with modifier | No | Misuse of Column Two code with Column One code |
| 0228T | Column 1 (primary), can be billed with modifier | No | Standards of medical/surgical practice |
| 0230T | Column 1 (primary), can be billed with modifier | No | Standards of medical/surgical practice |
| 0282T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0283T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0284T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0424T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0427T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0428T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
Frequently Asked Questions, CPT 20956
What does CPT code 20956 mean? +
CPT code 20956 represents: Iliac bone graft microvasc. It's in the Surgery (Musculoskeletal) category with a global period of 090.
What is the Medicare reimbursement for CPT 20956? +
The 2026 Medicare national average non-facility payment for CPT 20956 is $2373.31. Rates range from $2113.82 to $2944.59 across 53 states depending on MAC locality and GPCIs.
What modifiers can I use with CPT 20956? +
Surgery codes commonly use modifier 22 (increased procedural services), 50 (bilateral), 51 (multiple procedures), 52 (reduced services), 58/78/79 (staged, unplanned return, unrelated within global), 62 (co-surgeons), 80/82 (assistant surgeon), and 59 or the X{EPSU} subset for distinct procedural service.
What bundling edits apply to CPT 20956? +
This code has 10 NCCI PTP bundling relationships. See the NCCI Bundling section below for full list.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on April 17, 2026.
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