# CPT 27487

> Medicare paid $1,802.93 for CPT 27487 in the office (non-facility) setting and $1,802.93 in a facility under the Q3 2021 Physician Fee Schedule, effective July 2021. These are the national allowed amounts before the ~2% sequestration cut and before locality (GPCI) adjustment. This price has been unchanged since Q1 2021, when it decreased 1.8%.

## What it is

Redo knee replacement surgery in which the failed implants are removed and both the thigh-bone component and the entire shin-bone side are replaced, with bone graft used if needed to fill defects left behind. Revision work is longer and more demanding than a first-time replacement because the old parts and any cement must be extracted without destroying the remaining bone. It is distinguished from revisions that swap only one part of the knee.

## Selected release

- Release: Q3 2021 (2021 C)
- Effective: July 1 – September 30, 2021
- Status indicator: A
- Office (non-facility) national allowed amount: $1802.93
- Facility national allowed amount: $1802.93
- Sequestration: not applied

## RVUs and formula

- Work RVU: 27.11
- Office (non-facility) practice expense RVU: 19.17
- Facility practice expense RVU: 19.17
- Malpractice RVU: 5.39
- Conversion factor: 34.8931
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q3 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21c-updated-6302021.zip
- Parsed file: PPRRVU21_JUL.csv, row 7,432
- Canonical page: https://localishealth.com/cpt/27487/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/27487/2021/C
- Last significant update: 2026-08-04T03:10:45+00:00