0408U
What 0408U 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 0408U 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 0408U? These codes are bundled into it
0408U is a Column 1 code in 14 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 | |
|---|---|---|---|
0224U | 1 - modifier may bypass | Check pair | |
0226U | 1 - modifier may bypass | Check pair | |
86318 | Ia infectious agent antibody | 1 - modifier may bypass | Check pair |
86328 | Ia nfct ab sarscov2 covid19 | 1 - modifier may bypass | Check pair |
86408 | Neutrlzg antb sarscov2 scr | 1 - modifier may bypass | Check pair |
86409 | Neutrlzg antb sarscov2 titer | 1 - modifier may bypass | Check pair |
86413 | Sars-cov-2 antb quantitative | 1 - modifier may bypass | Check pair |
86769 | Sars-cov-2 covid-19 antibody | 1 - modifier may bypass | Check pair |
87426 | Sarscov coronavirus ag ia | 1 - modifier may bypass | Check pair |
87635 | Sars-cov-2 covid-19 amp prb | 1 - modifier may bypass | Check pair |
87811 | Sars-cov-2 covid19 w/optic | 0 - no modifier bypass | Check pair |
87913 | Nfct agt gntyp alys sarscov2 | 1 - modifier may bypass | Check pair |
96523 | Irrig drug delivery device | 0 - no modifier bypass | Check pair |
U0002 | 0 - no modifier bypass | Check pair |
0408U is bundled into these codes
0408U appears as a Column 2 code in 4 active edits. Reported with one of these Column 1 codes on the same date of service, 0408U is the code that denies.
| Column 1 code | Short description | Modifier indicator | |
|---|---|---|---|
0528U | 1 | Check pair | |
87428 | Sarscov & inf vir a&b ag ia | 1 | Check pair |
87636 | Sarscov2 & inf a&b amp prb | 1 | Check pair |
87637 | Sarscov2&inf a&b&rsv amp prb | 1 | 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.