# CPT 37183

> The national PFS baseline was $6,592.00 for CPT 37183 in the office (non-facility) setting and $376.50 in a facility under the Q4 2021 Physician Fee Schedule, effective October 2021. These are the national allowed amounts before locality (GPCI) adjustment; sequestration is excluded. Across payment localities, the office amount is $5,589.02–$9,015.90 and the facility amount is $350.50–$511.96. This price has been unchanged since Q1 2021, when it increased 3.7%.

## Selected release

- Release: Q4 2021 (2021 D)
- Effective: October 1 – December 31, 2021
- Status indicator: A
- Office (non-facility) national allowed amount: $6592.00
- Facility national allowed amount: $376.50
- Sequestration: not applied

## RVUs and formula

- Work RVU: 7.74
- Office (non-facility) practice expense RVU: 180.49
- Facility practice expense RVU: 2.36
- Malpractice RVU: 0.69
- 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 (Q4 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21d.zip
- Parsed file: PPRRVU21_OCT.csv, row 9,103
- Canonical page: https://localishealth.com/cpt/37183/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/37183/2021/D
- Last significant update: 2026-08-04T03:10:59+00:00