# CPT 00670

> CPT 00670 is an anesthesia code, so Medicare has no single national rate: payment is (base units + time units) × the locality's anesthesia conversion factor, so the amount varies by locality and case length (Q1 2015 release).

## What it is

Anesthesia care for large, complex operations on the spine and spinal cord, the kind involving multiple levels, instrumentation with rods and screws, or fusion. These cases are long, often done with the patient face down, and can involve significant blood loss and neuromonitoring, so the anesthesia workload is heavier than for a single-level decompression. It sits above the simpler spine anesthesia codes precisely because of that extent and complexity.

## Selected release

- Release: Q1 2015 (2015 A)
- Effective: January 1 – March 31, 2015
- 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: 35.7547
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q1 2015)
- CMS file: https://www.cms.gov/medicare/medicare-fee-for-service-payment/physicianfeesched/downloads/rvu15a.zip
- Parsed file: PPRRVU15_V1223c.csv, row 4,251
- Canonical page: https://localishealth.com/cpt/00670/2015/A
- Release-specific citation URL: https://localishealth.com/cpt/00670/2015/A
- Last significant update: 2026-08-04T03:05:39+00:00