`C8957`

What C8957 is

Intravenous infusion for therapy/diagnosis; initiation of prolonged infusion (more than 8 hours), requiring use of portable or implantable pump

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

Medically Unlikely Edit (MUE)

Medicare caps C8957 at 2 units 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: CMS Policy. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.

Billed with C8957? These codes are bundled into it

C8957 is a Column 1 code in 35 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
`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
`36000`	Place needle in vein	1 - modifier may bypass	Check pair
`36410`	Vnpnxr 3yr/> phy/qhp dx/ther	1 - modifier may 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
`64450`	Njx aa&/strd other pn/branch	1 - modifier may bypass	Check pair
`64454`	Njx aa&/strd gnclr nrv brnch	1 - modifier may bypass	Check pair
`64473`	Lwr xtr fscl pln blk uni njx	1 - modifier may bypass	Check pair
`64474`	Lwr xtr fscl pln blk uni nfs	1 - modifier may bypass	Check pair
`64486`	Tap block unil by injection	1 - modifier may bypass	Check pair
`64487`	Tap block uni by infusion	1 - modifier may bypass	Check pair
`64488`	Tap block bi injection	1 - modifier may bypass	Check pair
`64489`	Tap block bi by infusion	1 - modifier may bypass	Check pair
`96360`	Hydration iv infusion init	1 - modifier may bypass	Check pair
`96365`	Ther/proph/diag iv inf init	1 - modifier may bypass	Check pair
`96372`	Ther/proph/diag inj sc/im	1 - modifier may bypass	Check pair
`96374`	Ther/proph/diag inj iv push	1 - modifier may bypass	Check pair
`96377`	Applicaton on-body injector	1 - modifier may bypass	Check pair
`96415`	Chemo iv infusion addl hr	0 - no modifier bypass	Check pair
`96521`	Refill/maint portable pump	0 - no modifier bypass	Check pair
`96522`	Refill/maint pump/resvr syst	0 - no modifier bypass	Check pair
`96523`	Irrig drug delivery device	0 - no modifier bypass	Check pair
`99202`	Office o/p new sf 15 min	1 - modifier may bypass	Check pair
`99203`	Office o/p new low 30 min	1 - modifier may bypass	Check pair
`99204`	Office o/p new mod 45 min	1 - modifier may bypass	Check pair
`99205`	Office o/p new hi 60 min	1 - modifier may bypass	Check pair
`99211`	Off/op est may x req phy/qhp	0 - no modifier bypass	Check pair
`99212`	Office o/p est sf 10 min	1 - modifier may bypass	Check pair
`99213`	Office o/p est low 20 min	1 - modifier may bypass	Check pair

Showing 30 of 35 column 2 codes. Use the pair checker for any specific combination.

C8957 is bundled into these codes

C8957 appears as a Column 2 code in 2 active edits. Reported with one of these Column 1 codes on the same date of service, C8957 is the code that denies.

Column 1 code	Short description	Modifier indicator
`36823`	Insertion of cannula(s)	1	Check pair
`79403`	Hematopoietic nuclear tx	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.