CPT code 22630: Lumbar fusion, single lumbar interspace2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 22630 in California.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 22630 covers

A spine surgeon performs a posterior approach to fuse one lumbar interspace by preparing the disc space and placing bone graft between adjacent vertebral bodies. The work includes the laminectomy and/or discectomy needed to prepare the interspace for fusion, but not when performed solely as a separate decompression. This procedure is typically performed in a hospital operating room for conditions such as lumbar instability or degenerative disc disease.

Report 22630 for one interspace treated with the posterior interbody technique. Use 22632 for each additional interspace fused using that technique; a posterolateral fusion alone or a combined posterolateral and interbody fusion follows a different code path. The operative report should identify the lumbar level, fusion technique, and interspace preparation. The day-before preoperative visit and 90 days of related postoperative care are included. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures at 50%. Assistant-at-surgery payment and co-surgeon billing are permitted; team-surgery billing is not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 22630 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 22630 rate is calculated

Each of 22630’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 22630

22630 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 51

22630 compared with similar codes

How to choose

22612Spinal fusionPosterior lumbar, single level

22612 represents posterior or posterolateral lumbar fusion without an interbody fusion technique. Choose 22630 when the surgeon also fuses through the prepared disc space.

22632Lumbar fusionEach additional interspace

22630 reports the first lumbar interspace fused with the posterior interbody technique. 22632 is the add-on code for each additional interspace.

22633Lumbar fusionCombined techniques, one level

22633 describes a lumbar interspace fused with both interbody and posterolateral techniques. 22630 describes the posterior interbody technique without that combined approach.

22634Lumbar fusionEach additional interspace

22634 is the add-on for each additional interspace treated with the combined technique represented by 22633; it is not the additional-level code for 22630.

Codes related to 22630

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates