`0177U`

What 0177U 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 0177U 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: Nature of Service/Procedure. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.

Billed with 0177U? These codes are bundled into it

0177U is a Column 1 code in 128 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
`0009U`		1 - modifier may bypass	Check pair
`0068U`		1 - modifier may bypass	Check pair
`0202U`		1 - modifier may 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
`80506`	Path clin consltj prolng svc	1 - modifier may bypass	Check pair
`81309`	Pik3ca gene trgt seq alys	0 - no modifier bypass	Check pair
`84311`	Spectrophotometry	1 - modifier may bypass	Check pair
`87140`	Culture type immunofluoresc	1 - modifier may bypass	Check pair
`87143`	Culture typing glc/hplc	1 - modifier may bypass	Check pair
`87147`	Culture type immunologic	1 - modifier may bypass	Check pair
`87149`	Dna/rna direct probe	1 - modifier may bypass	Check pair
`87150`	Dna/rna amplified probe	1 - modifier may bypass	Check pair
`87152`	Culture type pulse field gel	1 - modifier may bypass	Check pair
`87153`	Dna/rna sequencing	1 - modifier may bypass	Check pair
`87154`	Cul typ id bld pthgn 6+ trgt	1 - modifier may bypass	Check pair
`87158`	Culture typing added method	1 - modifier may bypass	Check pair
`87468`	Anaplsma phgcytophlm amp prb	1 - modifier may bypass	Check pair
`87469`	Babesia microti amp prb	1 - modifier may bypass	Check pair
`87471`	Bartonella dna amp probe	1 - modifier may bypass	Check pair
`87472`	Bartonella dna quant	1 - modifier may bypass	Check pair
`87475`	Lyme dis dna dir probe	1 - modifier may bypass	Check pair
`87476`	Lyme dis dna amp probe	1 - modifier may bypass	Check pair
`87478`	Borrelia miyamotoi amp prb	1 - modifier may bypass	Check pair
`87480`	Candida dna dir probe	1 - modifier may bypass	Check pair
`87481`	Candida dna amp probe	1 - modifier may bypass	Check pair
`87482`	Candida dna quant	1 - modifier may bypass	Check pair
`87483`	Cns dna amp probe type 12-25	1 - modifier may bypass	Check pair
`87484`	Ehrlicha chaffeensis amp prb	1 - modifier may bypass	Check pair

Showing 30 of 128 column 2 codes. Use the pair checker for any specific combination.

0177U is bundled into these codes

0177U appears as a Column 2 code in 126 active edits. Reported with one of these Column 1 codes on the same date of service, 0177U is the code that denies.

Column 1 code	Modifier indicator
`0001U`	1	Check pair
`0004M`	1	Check pair
`0005U`	1	Check pair
`0006M`	1	Check pair
`0007M`	1	Check pair
`0008U`	1	Check pair
`0010U`	1	Check pair
`0011M`	1	Check pair
`0012M`	1	Check pair
`0013M`	1	Check pair
`0018U`	1	Check pair
`0019U`	1	Check pair
`0022U`	1	Check pair
`0023U`	1	Check pair
`0026U`	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.