# CPT 00104

> CPT 00104 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 $176.37 for a 60-minute case in Dallas, TX under the Q1 2018 release, before sequestration.

## What it is

Anesthesia care during electroconvulsive therapy (ECT), a treatment for severe depression and certain other psychiatric conditions in which a brief electrical stimulus is delivered to the brain under general anesthesia to produce a controlled seizure. The anesthesia is brief but requires a rapid-acting general anesthetic plus a muscle relaxant so the seizure does not cause a visible convulsion or injury, along with airway support for the few minutes the patient is unconscious.

## Selected release

- Release: Q1 2018 (2018 A)
- Effective: January 1 – March 31, 2018
- 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: 35.9996
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q1 2018)
- CMS file: https://www.cms.gov/medicare/medicare-fee-for-service-payment/physicianfeesched/downloads/rvu18ar1.zip
- Parsed file: PPRRVU18_JAN.csv, row 4,581
- Canonical page: https://localishealth.com/cpt/00104/2018/A
- Release-specific citation URL: https://localishealth.com/cpt/00104/2018/A
- Last significant update: 2026-08-04T03:08:09+00:00