`0501U`

What 0501U 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 0501U 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 0501U? These codes are bundled into it

0501U is a Column 1 code in 37 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
`0091U`		0 - no modifier bypass	Check pair
`36591`	Draw blood off venous device	0 - no modifier bypass	Check pair
`36592`	Collect blood from picc	0 - no modifier bypass	Check pair
`80503`	Path clin consltj sf 5-20	1 - modifier may bypass	Check pair
`80504`	Path clin consltj mod 21-40	1 - modifier may bypass	Check pair
`80505`	Path clin consltj high 41-60	1 - modifier may bypass	Check pair
`81210`	Braf gene	1 - modifier may bypass	Check pair
`81273`	Kit gene analys d816 variant	1 - modifier may bypass	Check pair
`81283`	Ifnl3 gene	1 - modifier may bypass	Check pair
`81322`	Pten gene known fam variant	1 - modifier may bypass	Check pair
`81327`	Sept9 gen prmtr mthyltn alys	1 - modifier may bypass	Check pair
`81328`	Slco1b1 gene com variants	1 - modifier may bypass	Check pair
`81335`	Tpmt gene com variants	1 - modifier may bypass	Check pair
`81341`	Trb@ gene rearrange dirprobe	1 - modifier may bypass	Check pair
`81400`	Mopath procedure level 1	1 - modifier may bypass	Check pair
`81401`	Mopath procedure level 2	1 - modifier may bypass	Check pair
`81402`	Mopath procedure level 3	1 - modifier may bypass	Check pair
`81403`	Mopath procedure level 4	1 - modifier may bypass	Check pair
`82270`	Occult blood feces	1 - modifier may bypass	Check pair
`82272`	Occult bld feces 1-3 tests	1 - modifier may bypass	Check pair
`82274`	Assay test for blood fecal	1 - modifier may bypass	Check pair
`84311`	Spectrophotometry	1 - modifier may bypass	Check pair
`88271`	Cytogenetics dna probe	1 - modifier may bypass	Check pair
`88272`	Cytogenetics 3-5	1 - modifier may bypass	Check pair
`88273`	Cytogenetics 10-30	1 - modifier may bypass	Check pair
`88274`	Cytogenetics 25-99	1 - modifier may bypass	Check pair
`88275`	Cytogenetics 100-300	1 - modifier may bypass	Check pair
`88291`	Cyto/molecular report	1 - modifier may bypass	Check pair
`88365`	Insitu hybridization (fish)	1 - modifier may bypass	Check pair
`88366`	Insitu hybridization (fish)	1 - modifier may bypass	Check pair

Showing 30 of 37 column 2 codes. Use the pair checker for any specific combination.

0501U is bundled into these codes

0501U appears as a Column 2 code in 76 active edits. Reported with one of these Column 1 codes on the same date of service, 0501U is the code that denies.

Column 1 code	Modifier indicator
`0101U`	0	Check pair
`0111U`	0	Check pair
`0163U`	0	Check pair
`0238U`	1	Check pair
`0239U`	1	Check pair
`0242U`	1	Check pair
`0244U`	1	Check pair
`0261U`	1	Check pair
`0326U`	1	Check pair
`0340U`	1	Check pair
`0421U`	0	Check pair
`0453U`	0	Check pair
`0460U`	1	Check pair
`0461U`	1	Check pair
`0464U`	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.