# CPT 77427

> Medicare paid $191.91 for CPT 77427 in the office (non-facility) setting and $191.91 in a facility under the Q2 2021 Physician Fee Schedule, effective April 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 2.3%.

## What it is

The radiation oncologist's ongoing oversight of a patient partway through a course of radiotherapy, counted in blocks of five delivered treatments. The work includes examining the patient, checking treatment setup and port images, reviewing the dose delivered so far, managing side effects such as skin reaction or fatigue, and deciding whether the plan needs adjusting. It is the physician management layer, separate from the daily technical delivery of the beam.

## Selected release

- Release: Q2 2021 (2021 B)
- Effective: April 1 – June 30, 2021
- Status indicator: A
- Office (non-facility) national allowed amount: $191.91
- Facility national allowed amount: $191.91
- Sequestration: not applied

## RVUs and formula

- Work RVU: 3.37
- Office (non-facility) practice expense RVU: 1.88
- Facility practice expense RVU: 1.88
- Malpractice RVU: 0.25
- 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 (Q2 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21b-updated-03022021.zip
- Parsed file: PPRRVU21_APR.csv, row 13,428
- Canonical page: https://localishealth.com/cpt/77427/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/77427/2021/B
- Last significant update: 2026-08-04T03:10:33+00:00