20931 Sp bone algrft struct add-on
Also known as: structural bone allograft, cortical bone allograft
Spinal bone allograft of structural type, add-on code for use with primary bone grafting procedures.
In Plain Language
large bone piece from donor for graft; structural bone from tissue bank
Clinical Context
Provides structural support during spinal fusion; used when significant load-bearing support is required.
RVU Breakdown
| Work RVU | 1.76 |
| Total RVU | 1.76 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 1.76, this code ranks in the 12th percentile among Surgery codes — 4.5x below the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 20931?
CPT 20931 (Sp bone algrft struct add-on) is a Surgery code. Spinal bone allograft of structural type, add-on code for use with primary bone grafting procedures.
What is the wRVU value for CPT 20931?
The work RVU for CPT 20931 is 1.76. This code is primarily used by Spine Surgery, Orthopedic Surgery.
When is CPT 20931 used?
Provides structural support during spinal fusion; used when significant load-bearing support is required.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.