CPT code 20930: Spinal graft material, morselized allograft2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 20930 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 20930 covers

This add-on represents morselized bone from a donor or the placement of osteopromotive material during spine surgery, commonly to support spinal fusion. The surgeon or other practitioner performing the spinal procedure reports it with the primary procedure when the graft material is used. It is distinct from graft taken from the patient, such as local bone or bone harvested from another site.

Medicare assigns this CPT code physician fee schedule status B: it is never paid separately, and its payment is included in payment for other services. Report it with an eligible primary spinal procedure, not by itself. Documentation should identify the material used and its role in the spinal procedure.

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 20930 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 20930 rate is calculated

Each of 20930’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 20930

20930 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

20930 compared with similar codes

How to choose

20931Spinal bone graftStructural allograft

Choose 20930 for morselized allograft or osteopromotive material. 20931 describes a structural allograft.

20936Spinal autograftLocal, same incision

20936 describes local bone from the patient used for spinal grafting; 20930 covers donor bone or osteopromotive material.

20937Spinal bone graftMorselized, separate incision

20937 is for morselized bone harvested from the patient. 20930 is for morselized donor bone or osteopromotive material.

20938Spinal bone graftStructural autograft, separate incision

20938 describes structural bone harvested from the patient; 20930 describes morselized donor bone or osteopromotive material.

Codes related to 20930

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