How much does Medicare pay for CPT 33427?

Medicare allowed an average of $2036.05 per service and paid $1624.90 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $10,608, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 33427?

Radical reconstruction of mitral valve on heart-lung machine. It was billed 1,460 times to 1,460 Medicare beneficiaries by 77 providers in 2024.

Which specialty bills 33427 most?

Thoracic Surgery, with 781 services from 43 clinicians. Next are Cardiac Surgery, Internal Medicine, Physician Assistant.

CPT 33427

Radical reconstruction of mitral valve on heart-lung machine

$2036.05Medicare-allowed amount per service, averaged across 1,460 services

Providers submitted

$10,608

Asking price, not received

Medicare allowed

$2036.05

The fee schedule figure

Medicare paid

$1624.90

Balance is patient coinsurance

Providers submitted an average of $10,608 for this code and Medicare allowed $2036.05 — 5.2× 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 $1624.90 (80%); the rest is the patient’s coinsurance and deductible.

Services: 1,460
Beneficiaries: 1,460
Providers billing it: 77
Total allowed: $2,972,633

What Medicare pays for CPT 33427

Across 1,460 services billed by 77 providers to 1,460 beneficiaries, Medicare allowed an average of $2036.05 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 33427

Specialty	Services	Beneficiaries	Avg allowed	Providers
Thoracic Surgery	781	781	$2168.16	43
Cardiac Surgery	522	522	$2001.87	28
Internal Medicine	85	85	$2210.62	1
Physician Assistant	44	44	$347.54	3
General Surgery	28	28	$1111.53	2

33427 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
New York	246	$1651.81	$1048.43	10
California	178	$1785.20	$1318.24	11
Florida	126	$2202.01	$1588.06	7
Massachusetts	115	$2236.43	$1657.01	5
Pennsylvania	111	$2373.69	$1779.31	7
Texas	96	$1915.23	$1472.45	6
Minnesota	94	$1375.30	$960.05	3
Illinois	64	$2261.35	$1456.40	4
Ohio	59	$2262.69	$1831.21	1
Michigan	54	$2492.07	$1799.12	3
Washington	38	$2058.09	$1554.40	3
South Carolina	35	$2233.13	$1828.10	2
Georgia	33	$2399.71	$1868.30	2
Virginia	31	$2599.00	$1868.18	1
Maryland	29	$2289.94	$1706.31	2
Kentucky	25	$2296.66	$1862.82	2
Indiana	24	$2121.86	$1855.95	1
New Jersey	23	$2351.34	$1820.20	1
Montana	17	$2348.48	$1861.17	1
Connecticut	13	$2609.92	$1860.26	1
Iowa	13	$2106.57	$1863.10	1
Missouri	12	$2328.41	$1865.05	1
Colorado	12	$2009.35	$1578.31	1
North Carolina	12	$2184.03	$1852.20	1

Related codes

33418Repair of mitral valve through the skin$1401.94
33405Replacement of aortic valve on heart-lung machine$1533.21
33430Replacement of mitral valve on heart-lung machine$2237.18

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.