# CPT 01958

> CPT 01958 is an anesthesia code, so Medicare has no single national rate: payment is (base units + time units) × the locality's anesthesia conversion factor — for example, about $241.86 for a 90-minute case in Dallas, TX under the Q4 2020 release, before sequestration.

## Selected release

- Release: Q4 2020 (2020 D)
- Effective: October 1 – December 31, 2020
- Status indicator: J
- Office (non-facility) national allowed amount: not published
- Facility national allowed amount: not published
- Sequestration: not applied

## RVUs and formula

- Work RVU: not published
- Office (non-facility) practice expense RVU: not published
- Facility practice expense RVU: not published
- Malpractice RVU: not published
- Conversion factor: 36.0896
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q4 2020)
- CMS file: https://www.cms.gov/files/zip/rvu20d-updated-11232020.zip
- Parsed file: PPRRVU20_OCT.csv, row 5,321
- Canonical page: https://localishealth.com/cpt/01958/2020/D
- Release-specific citation URL: https://localishealth.com/cpt/01958/2020/D
- Last significant update: 2026-08-04T03:10:00+00:00