# CPT 22633

> Medicare paid $1,936.55 for CPT 22633 in the office (non-facility) setting and $1,936.55 in a facility under the Q2 2017 Physician Fee Schedule, effective April 2017. These are the national allowed amounts before the ~2% sequestration cut and before locality (GPCI) adjustment. This price has been unchanged since Q1 2017, when it increased 0.2%.

## What it is

A lower-back fusion done from behind that combines two techniques at the same level: bone graft laid along the back of the spine and its side joints, and graft or a spacer placed into the cleared disc space between the vertebral bodies. Doing both is meant to give a more reliable, all-around fusion than either alone. This code is for one interspace at one segment; a second level fused the same way is reported additionally.

## Selected release

- Release: Q2 2017 (2017 B)
- Effective: April 1 – June 30, 2017
- Status indicator: A
- Office (non-facility) national allowed amount: $1936.55
- Facility national allowed amount: $1936.55
- Sequestration: not applied

## RVUs and formula

- Work RVU: 27.75
- Office (non-facility) practice expense RVU: 18.07
- Facility practice expense RVU: 18.07
- Malpractice RVU: 8.14
- Conversion factor: 35.8887
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q2 2017)
- CMS file: https://www.cms.gov/medicare/medicare-fee-for-service-payment/physicianfeesched/downloads/rvu17b.zip
- Parsed file: PPRRVU17_V0209.csv, row 5,907
- Canonical page: https://localishealth.com/cpt/22633/2017/A
- Release-specific citation URL: https://localishealth.com/cpt/22633/2017/B
- Last significant update: 2026-08-04T03:07:42+00:00