How much does Medicare pay for CPT 00400?

Medicare allowed an average of $98.17 per service and paid $77.07 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $1177.93, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 00400?

Anesthesia for other procedure on skin of arms, legs, and front body. It was billed 53,067 times to 51,987 Medicare beneficiaries by 3,262 providers in 2024.

Does 00400 pay differently in an office than a hospital?

Yes. The allowed amount averaged $81.66 in an office setting and $99.62 in a facility. The office rate is generally higher because the practice supplies the room, staff and equipment out of that single payment; in a hospital those are billed separately by the facility.

Which specialty bills 00400 most?

Anesthesiology, with 37,934 services from 2,315 clinicians. Next are Certified Registered Nurse Anesthetist (CRNA), Anesthesiology Assistant, Pain Management.

CPT 00400

Anesthesia for other procedure on skin of arms, legs, and front body

$98.17Medicare-allowed amount per service, averaged across 53,067 services

Providers submitted

$1177.93

Asking price, not received

Medicare allowed

$98.17

The fee schedule figure

Medicare paid

$77.07

Balance is patient coinsurance

Providers submitted an average of $1177.93 for this code and Medicare allowed $98.17 — 12.0× 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 $77.07 (79%); the rest is the patient’s coinsurance and deductible.

Office pays differently to hospital

Office / non-facility: $81.66
Hospital / facility: $99.62

The facility rate is higher for this code, which is unusual and generally means the service depends on equipment or staffing a hospital carries. 4,292 services were billed in an office setting and 48,775 in a facility.

Services: 53,067
Beneficiaries: 51,987
Providers billing it: 3,262
Total allowed: $5,209,587

What Medicare pays for CPT 00400

Across 53,067 services billed by 3,262 providers to 51,987 beneficiaries, Medicare allowed an average of $98.17 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 00400

Specialty	Services	Beneficiaries	Avg allowed	Providers
Anesthesiology	37,934	37,218	$96.57	2,315
Certified Registered Nurse Anesthetist (CRNA)	14,117	13,794	$103.04	884
Anesthesiology Assistant	466	441	$78.13	33
Pain Management	251	242	$90.10	13
Interventional Pain Management	92	87	$112.66	5
Critical Care (Intensivists)	57	57	$97.08	4
Preventive Medicine	40	40	$141.68	1
Physical Medicine and Rehabilitation	24	24	$72.40	1
Emergency Medicine	24	23	$128.97	2
Vascular Surgery	21	20	$114.70	1
Family Practice	17	17	$114.65	1
General Practice	13	13	$62.25	1
Internal Medicine	11	11	$104.15	1

00400 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	5,582	$105.21	$74.77	287
Florida	4,013	$98.40	$75.27	256
Pennsylvania	3,392	$85.01	$65.84	200
Texas	2,986	$98.32	$77.98	180
Massachusetts	2,905	$101.27	$76.12	182
California	2,424	$143.47	$108.63	159
New Jersey	2,231	$98.79	$72.64	126
Georgia	2,210	$101.04	$80.25	136
Virginia	2,136	$88.39	$69.76	139
Mississippi	2,066	$82.87	$67.77	104
North Carolina	2,063	$79.92	$64.23	128
South Carolina	1,745	$84.42	$67.78	102
Illinois	1,656	$92.64	$68.59	97
Maryland	1,597	$119.07	$89.73	99
Ohio	1,573	$87.30	$68.59	101
Alabama	1,387	$78.38	$64.76	92
Michigan	1,386	$82.56	$63.68	100
Tennessee	1,227	$89.00	$71.59	79
Missouri	1,011	$94.84	$74.80	69
Arizona	886	$110.75	$87.69	61
Kentucky	655	$86.04	$69.03	45
Louisiana	608	$98.96	$79.35	32
West Virginia	532	$77.25	$59.03	32
Kansas	502	$96.67	$78.05	34
Minnesota	486	$108.56	$85.57	36
Indiana	486	$104.07	$84.74	35
Arkansas	481	$124.06	$104.20	27
Wisconsin	464	$87.30	$71.55	33
New Hampshire	442	$90.16	$71.74	26
South Dakota	441	$82.60	$67.85	30
Connecticut	440	$95.27	$72.26	30
District of Columbia	363	$107.14	$78.39	22
Nebraska	337	$111.24	$92.01	22
Oklahoma	303	$111.70	$91.22	21
Nevada	280	$129.06	$102.47	16
Washington	259	$118.11	$89.79	20
Colorado	253	$103.77	$82.56	19
Delaware	249	$103.33	$81.95	17
Oregon	187	$134.49	$104.45	12
North Dakota	127	$100.64	$80.24	9
Rhode Island	111	$99.89	$75.76	7
Iowa	93	$110.25	$90.31	7
Hawaii	85	$159.79	$128.61	4
New Mexico	81	$116.24	$91.54	6
Wyoming	69	$136.62	$102.89	4
Utah	57	$161.33	$128.65	4
Puerto Rico	38	$111.70	$88.86	2
Montana	37	$124.02	$99.86	3
Alaska	37	$142.24	$91.95	3
Vermont	34	$85.62	$68.90	3
Idaho	27	$124.13	$102.00	2
Maine	27	$84.25	$68.81	2

Related codes

0042TComputed tomography (ct) of brain blood flow$212.67
00410Anesthesia for procedure to correct abnormal heart rhythm$72.03
00402Anesthesia for reconstruction of breast$220.85

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.