CPT 00537
Anesthesia for procedure to assess heart electrical activity
Asking price, not received
The fee schedule figure
Balance is patient coinsurance
Providers submitted an average of $3030.88 for this code and Medicare allowed $288.91 — 10.5× 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 $228.11 (79%); the rest is the patient’s coinsurance and deductible.
- Services
- 96,173
- Beneficiaries
- 95,673
- Providers billing it
- 4,360
- Total allowed
- $27,785,341
Medicare Part B, 2024
Services × allowed amount
What Medicare pays for CPT 00537
Across 96,173 services billed by 4,360 providers to 95,673 beneficiaries, Medicare allowed an average of $288.91 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 00537
| Specialty | Services | Beneficiaries | Avg allowed | Providers |
|---|---|---|---|---|
| Anesthesiology | 59,721 | 59,400 | $297.96 | 2,591 |
| Certified Registered Nurse Anesthetist (CRNA) | 32,255 | 32,092 | $280.78 | 1,570 |
| Anesthesiology Assistant | 3,564 | 3,552 | $216.73 | 169 |
| Critical Care (Intensivists) | 395 | 394 | $262.64 | 18 |
| Allergy/ Immunology | 62 | 62 | $239.55 | 3 |
| Pain Management | 46 | 46 | $246.69 | 2 |
| Pulmonary Disease | 33 | 33 | $254.42 | 2 |
| Emergency Medicine | 29 | 29 | $312.20 | 1 |
| Interventional Pain Management | 25 | 25 | $186.69 | 1 |
| Physical Medicine and Rehabilitation | 18 | 17 | $102.14 | 1 |
| Family Practice | 14 | 12 | $394.37 | 1 |
| Hospice and Palliative Care | 11 | 11 | $218.68 | 1 |
00537 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 |
|---|---|---|---|---|
| Texas | 9,552 | $285.54 | $225.03 | 406 |
| Florida | 9,236 | $281.30 | $215.75 | 398 |
| New York | 6,590 | $340.48 | $242.34 | 257 |
| California | 6,373 | $398.34 | $301.92 | 297 |
| Pennsylvania | 4,914 | $250.81 | $194.27 | 243 |
| Virginia | 4,429 | $271.06 | $212.91 | 187 |
| South Carolina | 4,110 | $216.65 | $175.47 | 171 |
| Massachusetts | 3,855 | $290.64 | $218.54 | 167 |
| Tennessee | 3,669 | $220.92 | $179.02 | 128 |
| North Carolina | 3,584 | $229.28 | $185.91 | 175 |
| New Jersey | 3,057 | $299.49 | $222.87 | 131 |
| Ohio | 3,038 | $261.77 | $207.94 | 158 |
| Georgia | 2,832 | $222.22 | $174.74 | 137 |
| Illinois | 2,403 | $292.52 | $219.41 | 143 |
| Arizona | 2,400 | $329.38 | $262.27 | 105 |
| Missouri | 2,250 | $267.78 | $211.00 | 114 |
| Alabama | 2,027 | $204.92 | $168.99 | 84 |
| Maryland | 1,926 | $324.02 | $244.07 | 84 |
| Kansas | 1,470 | $270.76 | $219.43 | 63 |
| Indiana | 1,465 | $362.74 | $295.72 | 64 |
| Washington | 1,297 | $350.46 | $269.75 | 68 |
| Mississippi | 1,250 | $210.82 | $174.05 | 51 |
| Oklahoma | 1,244 | $351.18 | $281.31 | 41 |
| Michigan | 1,201 | $260.35 | $199.22 | 75 |
| Minnesota | 1,136 | $305.20 | $243.16 | 54 |
| Arkansas | 1,073 | $337.88 | $281.94 | 24 |
| Louisiana | 860 | $268.01 | $215.49 | 49 |
| District of Columbia | 840 | $270.32 | $201.20 | 42 |
| Connecticut | 772 | $307.06 | $234.18 | 41 |
| Wisconsin | 748 | $265.89 | $217.89 | 40 |
| Colorado | 747 | $288.00 | $226.99 | 45 |
| South Dakota | 738 | $180.10 | $148.59 | 33 |
| Kentucky | 558 | $286.67 | $227.88 | 31 |
| Iowa | 512 | $315.99 | $259.45 | 38 |
| Nevada | 472 | $411.50 | $321.29 | 20 |
| Nebraska | 415 | $352.34 | $293.87 | 22 |
| Delaware | 366 | $283.69 | $222.68 | 16 |
| Utah | 339 | $400.65 | $315.14 | 22 |
| New Hampshire | 326 | $320.38 | $246.61 | 19 |
| Maine | 304 | $227.58 | $175.27 | 17 |
| Idaho | 286 | $341.14 | $281.04 | 16 |
| Alaska | 260 | $566.91 | $325.81 | 12 |
| New Mexico | 244 | $372.84 | $286.42 | 11 |
| Montana | 238 | $402.47 | $320.45 | 17 |
| West Virginia | 178 | $267.99 | $211.91 | 11 |
| Oregon | 176 | $348.58 | $277.26 | 12 |
| Wyoming | 134 | $453.35 | $353.71 | 4 |
| Rhode Island | 134 | $331.09 | $257.60 | 8 |
| Puerto Rico | 42 | $390.29 | $310.49 | 2 |
| Hawaii | 29 | $348.70 | $267.20 | 2 |
| Vermont | 26 | $478.49 | $371.76 | 2 |
| AE | 20 | $579.24 | $322.96 | 1 |
| ZZ | 16 | $252.48 | $185.24 | 1 |
| North Dakota | 12 | $171.53 | $158.26 | 1 |
Related codes
- 00520Anesthesia for other closed procedure on chest$146.70
- 00560Anesthesia for procedure on heart and large blood vessels$396.34
- 00530Anesthesia for insertion of permanent heart pacemaker$150.20
- 0055TMusculoskeletal surgical navigational orthopedic operation$185.99
- 00567Anesthesia for heart artery bypass grafting on heart-lung machine$659.46
- 00562Anesthesia for procedure on heart and large blood vessels$749.69
- 0054TComputer-assisted$168.86
- 00532Anesthesia for access to central vein$105.90
- 00534Anesthesia for insertion or replace of pacing heart defibrillator$204.12
- 00541Anesthesia for procedure on chest$495.59
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.