How much does Medicare pay for CPT 99183?

Medicare allowed an average of $102.12 per service and paid $80.95 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $445.36, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 99183?

Management of oxygen chamber therapy. It was billed 142,443 times to 14,594 Medicare beneficiaries by 802 providers in 2024.

Does 99183 pay differently in an office than a hospital?

Yes. The allowed amount averaged $103.53 in an office setting and $101.62 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 99183 most?

Emergency Medicine, with 23,193 services from 148 clinicians. Next are Family Practice, General Surgery, Nurse Practitioner.

CPT 99183

Management of oxygen chamber therapy

$102.12Medicare-allowed amount per service, averaged across 142,443 services

Providers submitted

$445.36

Asking price, not received

Medicare allowed

$102.12

The fee schedule figure

Medicare paid

$80.95

Balance is patient coinsurance

Providers submitted an average of $445.36 for this code and Medicare allowed $102.12 — 4.4× 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 $80.95 (79%); the rest is the patient’s coinsurance and deductible.

Office pays differently to hospital

Office / non-facility: $103.53
Hospital / facility: $101.62

The office rate is higher because the practice supplies the room, staff and equipment out of that payment. In a hospital the facility bills those separately, so the clinician's share is smaller — the total cost to Medicare is usually higher, not lower. 37,592 services were billed in an office setting and 104,851 in a facility.

Services: 142,443
Beneficiaries: 14,594
Providers billing it: 802
Total allowed: $14,546,279

What Medicare pays for CPT 99183

Across 142,443 services billed by 802 providers to 14,594 beneficiaries, Medicare allowed an average of $102.12 per service. That is 9.8 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 99183

Specialty	Services	Beneficiaries	Avg allowed	Providers
Emergency Medicine	23,193	3,199	$104.88	148
Family Practice	17,237	1,286	$102.71	72
General Surgery	14,861	1,468	$103.65	88
Nurse Practitioner	14,589	1,574	$86.50	96
Internal Medicine	13,556	1,157	$104.74	66
Undersea and Hyperbaric Medicine	12,574	997	$102.09	48
Physician Assistant	7,197	917	$90.23	48
Plastic and Reconstructive Surgery	5,984	640	$106.98	37
Infectious Disease	5,733	578	$104.73	39
Vascular Surgery	3,882	594	$109.15	32
Preventive Medicine	3,509	228	$102.12	12
Podiatry	2,956	256	$116.03	17
General Practice	2,653	141	$111.05	6
Physical Medicine and Rehabilitation	2,434	251	$104.32	16
Pulmonary Disease	2,428	286	$111.01	16

99183 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
California	25,677	$105.65	$80.55	116
Florida	19,754	$105.38	$80.42	97
Texas	19,391	$98.67	$79.08	82
New York	8,343	$111.81	$77.92	58
Arizona	4,481	$99.08	$79.51	28
Pennsylvania	4,417	$104.19	$80.53	22
Maryland	3,928	$106.46	$79.60	24
Ohio	3,692	$94.83	$76.33	16
Georgia	3,371	$103.56	$80.62	17
South Carolina	3,199	$99.49	$80.68	18
Virginia	2,946	$98.04	$78.30	18
Tennessee	2,903	$90.15	$76.79	12
Michigan	2,243	$106.51	$80.70	14
Utah	2,165	$92.14	$76.28	13
Illinois	2,091	$109.80	$80.79	16
New Jersey	2,062	$107.51	$79.22	26
Oregon	2,061	$97.94	$77.26	13
Idaho	2,036	$90.44	$76.44	15
Louisiana	1,885	$98.69	$80.73	10
Minnesota	1,789	$98.25	$79.85	17
North Carolina	1,751	$96.76	$79.85	13
Montana	1,647	$95.37	$75.41	9
Connecticut	1,595	$109.42	$77.67	11
Nebraska	1,526	$88.29	$75.84	11
Wisconsin	1,398	$93.95	$80.04	14
Massachusetts	1,385	$105.57	$78.10	13
Oklahoma	1,377	$93.51	$80.11	5
Colorado	1,239	$102.50	$81.38	12
Mississippi	1,145	$92.27	$74.74	6
Nevada	1,087	$99.88	$79.69	10
Missouri	1,068	$100.18	$80.66	6
Washington	987	$109.81	$80.66	9
Iowa	913	$87.84	$74.36	9
Indiana	910	$87.40	$75.81	5
North Dakota	870	$105.50	$80.98	3
Arkansas	837	$95.69	$81.26	3
Hawaii	724	$103.02	$81.90	5
New Mexico	674	$96.71	$73.40	4
Alabama	545	$95.59	$81.65	7
Kentucky	485	$97.01	$78.95	5
Alaska	479	$130.89	$79.72	2
Delaware	468	$103.58	$81.90	2
District of Columbia	443	$112.63	$82.24	2
Rhode Island	307	$109.51	$80.01	1
Kansas	113	$96.31	$81.06	2
South Dakota	36	$97.54	$81.91	1

Related codes

99152Use of a drug to induce depression of consciousness by physician perfo$15.74
99153Use of a drug to induce depression of consciousness by physician perfo$11.53
99195Drawing of blood for a medical problem$93.96
99157Use of a drug to induce depression of consciousness by physician not p$57.09
99156Use of a drug to induce depression of consciousness by physician not p$70.75

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.