How much does Medicare pay for CPT 33405?

Medicare allowed an average of $1533.21 per service and paid $1224.02 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $8806.31, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 33405?

Replacement of aortic valve on heart-lung machine. It was billed 6,056 times to 6,052 Medicare beneficiaries by 371 providers in 2024.

Which specialty bills 33405 most?

Thoracic Surgery, with 2,921 services from 174 clinicians. Next are Cardiac Surgery, Physician Assistant, General Surgery.

CPT 33405

Replacement of aortic valve on heart-lung machine

$1533.21Medicare-allowed amount per service, averaged across 6,056 services

Providers submitted

$8806.31

Asking price, not received

Medicare allowed

$1533.21

The fee schedule figure

Medicare paid

$1224.02

Balance is patient coinsurance

Providers submitted an average of $8806.31 for this code and Medicare allowed $1533.21 — 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 $1224.02 (80%); the rest is the patient’s coinsurance and deductible.

Services: 6,056
Beneficiaries: 6,052
Providers billing it: 371
Total allowed: $9,285,120

What Medicare pays for CPT 33405

Across 6,056 services billed by 371 providers to 6,052 beneficiaries, Medicare allowed an average of $1533.21 per service. 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 33405

Specialty	Services	Beneficiaries	Avg allowed	Providers
Thoracic Surgery	2,921	2,919	$1737.63	174
Cardiac Surgery	2,154	2,153	$1693.47	126
Physician Assistant	633	632	$248.48	47
General Surgery	162	162	$1263.53	10
Cardiology	67	67	$1463.67	5
Vascular Surgery	54	54	$1509.96	4
Nurse Practitioner	53	53	$246.33	4
Internal Medicine	12	12	$596.44	1

33405 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
Pennsylvania	599	$1643.56	$1272.27	36
California	594	$1242.22	$946.49	36
Florida	497	$1601.17	$1177.55	22
Ohio	374	$1440.73	$1155.92	19
New York	340	$1837.13	$1215.55	20
Texas	333	$1640.58	$1313.65	19
Illinois	303	$1628.73	$1152.62	19
New Jersey	290	$1457.56	$1076.52	18
Arizona	261	$1201.71	$954.50	16
Massachusetts	196	$1791.62	$1346.56	13
Indiana	158	$1285.07	$1133.12	9
Georgia	140	$1894.85	$1466.61	9
Missouri	137	$1548.95	$1267.21	9
North Carolina	133	$1481.80	$1265.17	9
Alabama	132	$1200.37	$1025.72	7
Wisconsin	121	$1351.03	$1214.67	8
Virginia	111	$1678.37	$1277.08	8
Oregon	104	$1461.27	$1172.63	7
Michigan	77	$1637.37	$1183.51	6
Minnesota	76	$1211.43	$1031.26	6
Kentucky	74	$1241.74	$986.36	5
Colorado	73	$1728.44	$1324.11	5
South Carolina	72	$1494.70	$1216.83	5
Arkansas	72	$1386.45	$1210.06	5
Tennessee	61	$1480.08	$1325.28	5
New Hampshire	59	$1902.56	$1489.17	5
Kansas	59	$1731.32	$1534.93	3
Washington	58	$1902.02	$1478.13	4
Nebraska	55	$1631.18	$1483.93	4
Iowa	55	$1339.18	$1203.86	4
Connecticut	54	$1598.95	$1158.25	4
Maryland	46	$1997.48	$1460.87	3
North Dakota	42	$1141.37	$951.80	3
Louisiana	41	$1854.13	$1556.22	3
Montana	30	$1680.01	$1331.47	2
Oklahoma	29	$1796.92	$1551.13	2
Utah	28	$1451.82	$1122.66	2
Delaware	27	$1317.23	$1018.47	2
District of Columbia	27	$2182.16	$1571.92	1
Idaho	26	$1440.32	$1230.59	2
Nevada	25	$1821.21	$1528.08	2
Rhode Island	22	$1623.23	$1230.61	1
Mississippi	20	$1686.66	$1357.09	1
Maine	14	$245.26	$118.20	1
West Virginia	11	$1881.98	$1353.80	1

Related codes

33418Repair of mitral valve through the skin$1401.94
33430Replacement of mitral valve on heart-lung machine$2237.18
33427Radical reconstruction of mitral valve on heart-lung machine$2036.05

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.