`C9738`

What C9738 is

Adjunctive blue light cystoscopy with fluorescent imaging agent (list separately in addition to code for primary procedure)

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

Medically Unlikely Edit (MUE)

Medicare caps C9738 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 C9738? These codes are bundled into it

C9738 is a Column 1 code in 230 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
`00910`	Anes transurethral px nos	0 - no modifier bypass	Check pair
`00916`	Anes trurl px rescj bleeding	0 - no modifier bypass	Check pair
`0213T`	Njx paravert w/us cer/thor	0 - no modifier bypass	Check pair
`0216T`	Njx paravert w/us lumb/sac	0 - no modifier bypass	Check pair
`0596T`	Temp fml iu vlv-pmp 1st insj	0 - no modifier bypass	Check pair
`0597T`	Temp fml iu valve-pmp rplcmt	0 - no modifier bypass	Check pair
`0708T`	Id ca immntx prep & 1st njx	1 - modifier may bypass	Check pair
`0709T`	Id ca immntx each addl njx	1 - modifier may bypass	Check pair
`12001`	Rpr s/n/ax/gen/trnk 2.5cm/<	1 - modifier may bypass	Check pair
`12002`	Rpr s/n/ax/gen/trnk2.6-7.5cm	1 - modifier may bypass	Check pair
`12004`	Rpr s/n/ax/gen/trk7.6-12.5cm	1 - modifier may bypass	Check pair
`12005`	Rpr s/n/a/gen/trk12.6-20.0cm	1 - modifier may bypass	Check pair
`12006`	Rpr s/n/a/gen/trk20.1-30.0cm	1 - modifier may bypass	Check pair
`12007`	Rpr s/n/ax/gen/trnk >30.0 cm	1 - modifier may bypass	Check pair
`12011`	Rpr f/e/e/n/l/m 2.5 cm/<	1 - modifier may bypass	Check pair
`12013`	Rpr f/e/e/n/l/m 2.6-5.0 cm	1 - modifier may bypass	Check pair
`12014`	Rpr f/e/e/n/l/m 5.1-7.5 cm	1 - modifier may bypass	Check pair
`12015`	Rpr f/e/e/n/l/m 7.6-12.5 cm	1 - modifier may bypass	Check pair
`12016`	Rpr fe/e/en/l/m 12.6-20.0 cm	1 - modifier may bypass	Check pair
`12017`	Rpr fe/e/en/l/m 20.1-30.0 cm	1 - modifier may bypass	Check pair
`12018`	Rpr f/e/e/n/l/m >30.0 cm	1 - modifier may bypass	Check pair
`12020`	Tx supfc wnd dehsn smpl clsr	1 - modifier may bypass	Check pair
`12021`	Tx supfc wnd dehsn w/packing	1 - modifier may bypass	Check pair
`12031`	Intmd rpr s/a/t/ext 2.5 cm/<	1 - modifier may bypass	Check pair
`12032`	Intmd rpr s/a/t/ext 2.6-7.5	1 - modifier may bypass	Check pair
`12034`	Intmd rpr s/tr/ext 7.6-12.5	1 - modifier may bypass	Check pair
`12035`	Intmd rpr s/a/t/ext 12.6-20	1 - modifier may bypass	Check pair
`12036`	Intmd rpr s/a/t/ext 20.1-30	1 - modifier may bypass	Check pair
`12037`	Intmd rpr s/tr/ext >30.0 cm	1 - modifier may bypass	Check pair
`12041`	Intmd rpr n-hf/genit 2.5cm/<	1 - modifier may bypass	Check pair

Showing 30 of 230 column 2 codes. Use the pair checker for any specific combination.

C9738 is bundled into these codes

C9738 appears as a Column 2 code in 1 active edits. Reported with one of these Column 1 codes on the same date of service, C9738 is the code that denies.

Column 1 code	Short description	Modifier indicator
`52000`	Cystourethroscopy	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.