0401U
What 0401U is
This code appears in the Medicare NCCI edit tables. It has no RVUs in the CY2026 Physician Fee Schedule file.
Medically Unlikely Edit (MUE)
Medicare caps 0401U at 1 unit per date of service for practitioner claims (MAI 2 - date of service edit (absolute): units above the MUE never pay), rationale: Code Descriptor / CPT Instruction. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.
Billed with 0401U? These codes are bundled into it
0401U is a Column 1 code in 7 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.
| Column 2 code | Short description | Modifier indicator | |
|---|---|---|---|
0237U | 1 - modifier may bypass | Check pair | |
0308U | 1 - modifier may bypass | Check pair | |
0309U | 0 - no modifier bypass | Check pair | |
0439U | 1 - modifier may bypass | Check pair | |
0440U | 1 - modifier may bypass | Check pair | |
81413 | Car ion chnnlpath inc 10 gns | 1 - modifier may bypass | Check pair |
81439 | Hrdtry cardmypy gene panel | 1 - modifier may bypass | Check pair |
0401U is bundled into these codes
0401U appears as a Column 2 code in 1 active edits. Reported with one of these Column 1 codes on the same date of service, 0401U is the code that denies.
| Column 1 code | Short description | Modifier indicator | |
|---|---|---|---|
0415U | 0 | Check pair |
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.