# CPT 33533

> Medicare paid $1,908.30 for CPT 33533 in the office (non-facility) setting and $1,908.30 in a facility under the Q1 2021 Physician Fee Schedule, effective January 2021. These are the national allowed amounts before the ~2% sequestration cut and before locality (GPCI) adjustment. This is a 2.4% decrease from the previous quarter.

## What it is

Open-heart surgery that reroutes blood around a blocked coronary artery using an artery as the new channel, most often the internal mammary artery running inside the chest wall, which is detached at one end and sewn onto the coronary vessel past the blockage. This entry is for one arterial graft; companion codes describe two, three, or four or more arterial grafts in the same operation. Arterial conduits are favored over leg-vein grafts because they tend to stay open for far longer.

## Selected release

- Release: Q1 2021 (2021 A)
- Effective: January 1 – March 31, 2021
- Status indicator: A
- Office (non-facility) national allowed amount: $1908.30
- Facility national allowed amount: $1908.30
- Sequestration: not applied

## RVUs and formula

- Work RVU: 33.75
- Office (non-facility) practice expense RVU: 13.23
- Facility practice expense RVU: 13.23
- Malpractice RVU: 7.71
- 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 (Q1 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21a-updated-01052021.zip
- Parsed file: PPRRVU21_JAN.csv, row 8,431
- Canonical page: https://localishealth.com/cpt/33533/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/33533/2021/A
- Last significant update: 2026-08-04T03:10:16+00:00