27598 Amputate lower leg at knee
Also known as: through-knee amputation, knee disarticulation
Surgical amputation of the lower extremity at the knee joint level (through-knee amputation or knee disarticulation) preserving femoral length.
In Plain Language
amputation at the knee joint
Clinical Context
Used for lower leg loss from trauma, infection, or vascular disease. Preserves femoral length for prosthetics.
RVU Breakdown
| Work RVU | 10.94 |
| Total RVU | 10.94 |
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 10.94, this code ranks in the 62nd percentile among Surgery codes — 1.4x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 27598?
CPT 27598 (Amputate lower leg at knee) is a Surgery code. Surgical amputation of the lower extremity at the knee joint level (through-knee amputation or knee disarticulation) preserving femoral length.
What is the wRVU value for CPT 27598?
The work RVU for CPT 27598 is 10.94. This code is primarily used by Orthopedic Surgery, Trauma Surgery. It has a 90-day global period.
When is CPT 27598 used?
Used for lower leg loss from trauma, infection, or vascular disease. Preserves femoral length for prosthetics.
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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.