U0001

What U0001 is

Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr diagnostic panel

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

Medically Unlikely Edit (MUE)

Medicare caps U0001 at 2 units 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: Nature of Analyte. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.

Billed with U0001? These codes are bundled into it

U0001 is a Column 1 code in 1 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.

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.