# CPT 99183

> Medicare paid $112.07 for CPT 99183 in the office (non-facility) setting and $112.07 in a facility under the Q4 2016 Physician Fee Schedule, effective October 2016. These are the national allowed amounts before the ~2% sequestration cut and before locality (GPCI) adjustment. This price has been unchanged since Q1 2016, when it decreased 1.0%.

## What it is

The physician's attendance and supervision during a session of hyperbaric oxygen therapy, in which the patient breathes pure oxygen inside a pressurised chamber to drive far more oxygen than usual into the bloodstream and tissues. This code captures the doctor's part — assessing the patient beforehand, setting and adjusting the pressure and duration, and being on hand for complications such as ear barotrauma or oxygen toxicity — and not the chamber time itself, which the facility accounts for separately. It is reported once for each session attended.

## Selected release

- Release: Q4 2016 (2016 D)
- Effective: October 1 – December 31, 2016
- Status indicator: A
- Office (non-facility) national allowed amount: $112.07
- Facility national allowed amount: $112.07
- Sequestration: not applied

## RVUs and formula

- Work RVU: 2.11
- Office (non-facility) practice expense RVU: 0.77
- Facility practice expense RVU: 0.77
- Malpractice RVU: 0.25
- Conversion factor: 35.8043
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q4 2016)
- CMS file: https://www.cms.gov/medicare/medicare-fee-for-service-payment/physicianfeesched/downloads/rvu16d.zip
- Parsed file: PPRRVU16_V0804.csv, row 16,147
- Canonical page: https://localishealth.com/cpt/99183/2016/A
- Release-specific citation URL: https://localishealth.com/cpt/99183/2016/D
- Last significant update: 2026-08-04T03:07:13+00:00