26820 Thumb fusion with graft
Also known as: thumb fusion with graft, thumb joint fusion, thumb arthrodesis
Surgical fusion of the thumb interphalangeal or metacarpophalangeal joint with autogenous bone graft to create bony union.
In Plain Language
fusing thumb joint with bone graft; permanent thumb joint stiffening
Clinical Context
Performed for thumb joint arthritis, instability, or post-traumatic changes where joint fusion with grafting is necessary to provide stability and pain relief.
RVU Breakdown
| Work RVU | 8.24 |
| Total RVU | 8.24 |
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. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 8.24, this code ranks in the 51st percentile among Surgery codes — 1.0x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 26820?
CPT 26820 (Thumb fusion with graft) is a Surgery code. Surgical fusion of the thumb interphalangeal or metacarpophalangeal joint with autogenous bone graft to create bony union.
What is the wRVU value for CPT 26820?
The work RVU for CPT 26820 is 8.24. This code is primarily used by Hand Surgery, Orthopedic Surgery. It has a 90-day global period.
When is CPT 26820 used?
Performed for thumb joint arthritis, instability, or post-traumatic changes where joint fusion with grafting is necessary to provide stability and pain relief.
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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.