How much does Medicare pay for CPT 77373?

Medicare allowed an average of $965.17 per service and paid $770.44 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $5541.56, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 77373?

Cranial lesion surgery using radiation over multiple sessions. It was billed 37,564 times to 13,025 Medicare beneficiaries by 477 providers in 2024.

Which specialty bills 77373 most?

Radiation Oncology, with 35,350 services from 465 clinicians. Next are Radiation Therapy Center, Diagnostic Radiology.

CPT 77373

Cranial lesion surgery using radiation over multiple sessions

$965.17Medicare-allowed amount per service, averaged across 37,564 services

Providers submitted

$5541.56

Asking price, not received

Medicare allowed

$965.17

The fee schedule figure

Medicare paid

$770.44

Balance is patient coinsurance

Providers submitted an average of $5541.56 for this code and Medicare allowed $965.17 — 5.7× less. That gap is normal and means nothing on its own: Medicare pays its fee schedule regardless of what is billed, so the submitted figure describes a hospital chargemaster, not a price anyone paid. Of the allowed amount Medicare paid $770.44 (80%); the rest is the patient’s coinsurance and deductible.

Services: 37,564
Beneficiaries: 13,025
Providers billing it: 477
Total allowed: $36,255,646

What Medicare pays for CPT 77373

Across 37,564 services billed by 477 providers to 13,025 beneficiaries, Medicare allowed an average of $965.17 per service. That is 2.9 services per beneficiary, so this is a code patients typically receive more than once. The allowed amount is the figure that matters: it is what Medicare and the patient together owe, set by the fee schedule and adjusted for local practice costs. What a provider chose to submit has no bearing on it.

Who bills 77373

Specialty	Services	Beneficiaries	Avg allowed	Providers
Radiation Oncology	35,350	12,522	$969.41	465
Radiation Therapy Center	2,077	461	$891.35	9
Diagnostic Radiology	137	42	$990.28	3

77373 reimbursement by state

Two different numbers. Allowed is what Medicare actually allowed in that state, which includes the local practice-cost adjustment. Standardized strips that geographic adjustment out of the payment, so it is the column to use when comparing states — a difference there reflects how the code was billed, not what it costs to run a practice locally.

State	Services	Allowed	Standardized pmt	Providers
Florida	7,511	$968.83	$776.77	72
Texas	5,401	$941.87	$776.49	60
California	3,411	$1137.74	$776.18	47
Virginia	1,714	$965.33	$779.39	14
Arizona	1,584	$953.62	$776.15	21
Arkansas	1,549	$830.13	$778.08	7
South Carolina	1,493	$909.38	$775.44	9
Washington	1,201	$1001.57	$777.36	17
Kansas	1,158	$862.26	$778.44	7
Maryland	1,010	$994.04	$777.36	17
Minnesota	921	$1008.19	$777.12	20
Illinois	900	$979.39	$775.86	12
Tennessee	760	$879.14	$777.42	15
North Carolina	629	$911.95	$776.67	11
Indiana	619	$887.49	$776.55	10
Michigan	598	$918.13	$776.94	10
Louisiana	597	$862.94	$780.24	10
New York	566	$1133.19	$775.81	14
Nebraska	549	$886.72	$776.31	5
Kentucky	545	$882.31	$774.14	6
Georgia	489	$900.17	$776.83	15
North Dakota	426	$1034.68	$776.61	4
Pennsylvania	419	$943.35	$776.70	6
Alabama	352	$881.70	$775.73	7
Alaska	327	$1045.36	$776.75	3
New Jersey	289	$1121.04	$775.32	7
Missouri	283	$872.23	$775.98	6
Massachusetts	278	$1036.52	$778.71	3
Wisconsin	261	$970.67	$775.13	6
Colorado	219	$1019.44	$774.13	5
Idaho	186	$891.26	$775.75	4
District of Columbia	153	$1002.71	$775.12	4
Nevada	151	$976.62	$777.33	3
Connecticut	141	$1066.79	$778.38	1
Oklahoma	141	$852.31	$764.30	3
West Virginia	138	$898.46	$775.52	1
Wyoming	127	$1038.21	$777.81	1
New Mexico	97	$893.41	$778.49	3
Ohio	96	$946.23	$776.43	3
Hawaii	95	$1095.99	$781.84	3
Oregon	84	$1072.74	$777.35	2
Rhode Island	69	$1024.08	$778.45	2
Maine	27	$856.32	$766.29	1

Related codes

77300Calculation of radiation therapy dose$41.81
77334Design and construction of complex radiation treatment device$75.55
77336Continuing radiation therapy consultation per week$87.27
77338Design and construction of radiation treatment device for high precisi$294.26
77301High precision radiation therapy planning$830.13
77332Design and construction of simple radiation treatment device$30.27
77331Special radiation therapy planning$51.76
77370Special medical radiation therapy consultation$146.53
77307Complex radiation therapy planning for delivery of external radiation$178.50
77333Design and construction of intermediate radiation treatment device$73.71
77321Special radiation therapy planning for delivery of external radiation$66.64
77318Complex radiation therapy planning for delivery of internal radiation$389.02

Billing this code is not the same as earning it

An allowed amount is revenue to a practice, not income to a clinician. It funds staff, premises, equipment and supplies before anyone is paid. What clinicians actually earn is published separately by the Department of Labor, and what industry pays them is published separately again by CMS — this site carries both.

What doctors are paid →·Look up a clinician →·All procedure codes →

Where this comes from. CMS Medicare Physician & Other Practitioners, by Provider and Service, 2024. It covers fee-for-service Original Medicare Part B only — not Medicare Advantage, not Medicaid, and not commercial insurance, which typically pays more for the same code.

How it is averaged. CMS publishes one average per provider per code. Every figure here is re-weighted by the number of services, so a clinician who billed the code 4,000 times counts 4,000 times more than one who billed it twice. CMS also suppresses any provider-code pair with fewer than 11 beneficiaries, so low-volume practice is missing from these totals by design.