# CPT 83615

> Not at a published national rate. CPT 83615 carries status X (statutory exclusion) in the Q4 2021 release. The statutory definition of physician services does not include this item. Treat the blank amount as unpriced, not as $0.

## What it is

Measures lactate dehydrogenase, an enzyme present in nearly every tissue in the body and spilled into the blood whenever cells are damaged. Because it is so widespread, a high result reliably says that cells are breaking down somewhere without saying where. It is used as a broad marker of tissue injury, as a sign that red blood cells are being destroyed, and as a way of tracking disease activity in several cancers, particularly lymphomas.

## Selected release

- Release: Q4 2021 (2021 D)
- Effective: October 1 – December 31, 2021
- Status indicator: X
- 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: 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 14,665
- Canonical page: https://localishealth.com/cpt/83615/2014/B
- Release-specific citation URL: https://localishealth.com/cpt/83615/2021/D
- Last significant update: 2026-08-04T03:10:59+00:00