`77371` Srs multisource

What 77371 is

CMS fee schedule short descriptor: Srs multisource.

Full CPT long descriptions are licensed by the American Medical Association and are not published on this site; the short descriptor above is the one CMS prints in its own fee schedule file. See About CPT.

Medicare payment for 77371 (CY2026)

This code has no Physician Fee Schedule rate: Carrier-priced - the Medicare contractor sets the price. It may be paid under a different fee schedule (clinical laboratory, DMEPOS, anesthesia) or not paid at all - check the relevant CMS schedule.

Medically Unlikely Edit (MUE)

Medicare caps 77371 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 77371? These codes are bundled into it

77371 is a Column 1 code in 243 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
`0591T`	Hlth&wb coaching indiv 1st	1 - modifier may bypass	Check pair
`0592T`	Hlth&wb coaching indiv f-up	1 - modifier may bypass	Check pair
`0593T`	Hlth&wb coaching group	1 - modifier may 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
`0947T`	Mrgfus strtctc bl-br disrpj	1 - modifier may bypass	Check pair
`11920`	Correct skin color 6.0 cm/<	0 - no modifier bypass	Check pair
`11921`	Correct skn color 6.1-20.0cm	0 - no modifier bypass	Check pair
`16000`	Initial treatment of burn(s)	0 - no modifier bypass	Check pair
`16020`	Dress/debrid p-thick burn s	0 - no modifier bypass	Check pair
`16025`	Dress/debrid p-thick burn m	0 - no modifier bypass	Check pair
`16030`	Dress/debrid p-thick burn l	0 - no modifier bypass	Check pair
`20660`	Apply rem fixation device	0 - no modifier bypass	Check pair
`20661`	Application halo cranial	1 - modifier may bypass	Check pair
`20693`	Adjmt/revj ext fixj sys anes	1 - modifier may bypass	Check pair
`20694`	Rmvl ext fixj sys under anes	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
`36425`	Venipuncture cutdown 1 yr/>	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
`51701`	Insert bladder catheter	0 - no modifier bypass	Check pair
`51702`	Insert temp bladder cath	0 - no modifier bypass	Check pair
`51703`	Insert bladder cath complex	0 - no modifier bypass	Check pair
`61715`	Mrgfus strtctc ablt trgt icr	1 - modifier may bypass	Check pair
`61720`	Incise skull/brain surgery	1 - modifier may bypass	Check pair
`61781`	Scan proc cranial intra	1 - modifier may bypass	Check pair
`61782`	Scan proc cranial extra	1 - modifier may bypass	Check pair
`61783`	Scan proc spinal	0 - no modifier bypass	Check pair
`61790`	Treat trigeminal nerve	1 - modifier may bypass	Check pair

Showing 30 of 243 column 2 codes. Use the pair checker for any specific combination.

77371 is bundled into these codes

77371 appears as a Column 2 code in 14 active edits. Reported with one of these Column 1 codes on the same date of service, 77371 is the code that denies.

Column 1 code	Short description	Modifier indicator
`32701`	Thorax stereo rad targetw/tx	0	Check pair
`61735`	Incise skull/brain surgery	1	Check pair
`61750`	Incise skull/brain biopsy	1	Check pair
`61751`	Brain biopsy w/ct/mr guide	1	Check pair
`61760`	Implant brain electrodes	1	Check pair
`61770`	Incise skull for treatment	1	Check pair
`61796`	Srs cranial lesion simple	0	Check pair
`61798`	Srs cranial lesion complex	0	Check pair
`63620`	Srs spinal lesion	1	Check pair
`77373`	Strtctc bdy rad ther tx dlvr	0	Check pair
`77520`	Proton trmt simple w/o comp	0	Check pair
`77522`	Proton trmt simple w/comp	0	Check pair
`77523`	Proton trmt intermediate	0	Check pair
`77525`	Proton treatment complex	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.