G0306 Cbc/diffwbc w/o platelet

What G0306 is

Complete cbc, automated (hgb, hct, rbc, wbc, without platelet count) and automated wbc differential count

HCPCS Level II long description, CMS October 2026 file. See the G codes page for the full section.

Medicare payment for G0306 (CY2026)

This code has no Physician Fee Schedule rate: Statutory exclusion - not payable under the Physician Fee Schedule. It may be paid under a different fee schedule (clinical laboratory, DMEPOS, anesthesia) or not paid at all - check the relevant CMS schedule.

Medically Unlikely Edit (MUE)

Medicare caps G0306 at 1 unit per date of service for practitioner claims (MAI 3 - date of service edit (clinical): units above the MUE may pay with documentation on appeal), rationale: Clinical: Data. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.

Billed with G0306? These codes are bundled into it

G0306 is a Column 1 code in 13 active NCCI PTP edits. When one of these Column 2 codes is reported on the same date of service, it is denied as bundled - unless the edit's modifier indicator is 1 and documentation supports a distinct service with an NCCI-associated modifier.

G0306 is bundled into these codes

G0306 appears as a Column 2 code in 2 active edits. Reported with one of these Column 1 codes on the same date of service, G0306 is the code that denies.

Data: CMS CY2026 Physician Fee Schedule RVU file (October release, RVU26D) and Medicare NCCI PTP practitioner edits v32.3 (2026 Q4). Verify against the official files before billing or contracting decisions.