How much does Medicare pay for CPT 77066?

Medicare allowed an average of $84.05 per service and paid $59.88 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $311.81, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is CPT code 77066?

Diagnostic mammography of both breasts. It was billed 532,566 times to 522,434 Medicare beneficiaries by 8,146 providers in 2024.

Does 77066 pay differently in an office than a hospital?

Yes. The allowed amount averaged $123.83 in an office setting and $46.27 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 77066 most?

Diagnostic Radiology, with 505,570 services from 7,742 clinicians. Next are Independent Diagnostic Testing Facility (IDTF), General Surgery, Interventional Radiology.

CPT 77066

Diagnostic mammography of both breasts

$84.05Medicare-allowed amount per service, averaged across 532,566 services

Providers submitted

$311.81

Asking price, not received

Medicare allowed

$84.05

The fee schedule figure

Medicare paid

$59.88

Balance is patient coinsurance

Providers submitted an average of $311.81 for this code and Medicare allowed $84.05 — 3.7× 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 $59.88 (71%); the rest is the patient’s coinsurance and deductible.

Office pays differently to hospital

Office / non-facility: $123.83
Hospital / facility: $46.27

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. 259,415 services were billed in an office setting and 273,151 in a facility.

Services: 532,566
Beneficiaries: 522,434
Providers billing it: 8,146
Total allowed: $44,762,172

What Medicare pays for CPT 77066

Across 532,566 services billed by 8,146 providers to 522,434 beneficiaries, Medicare allowed an average of $84.05 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 77066

Specialty	Services	Beneficiaries	Avg allowed	Providers
Diagnostic Radiology	505,570	496,098	$81.75	7,742
Independent Diagnostic Testing Facility (IDTF)	10,542	10,370	$137.13	158
General Surgery	4,975	4,846	$136.75	28
Interventional Radiology	4,134	4,116	$90.56	83
Surgical Oncology	1,475	1,314	$167.14	3
Obstetrics & Gynecology	1,073	1,009	$119.59	47
Internal Medicine	871	848	$109.42	14
Family Practice	676	612	$104.97	16
Nurse Practitioner	657	656	$131.30	4
Mammography Center	480	472	$136.30	2
Radiation Oncology	414	410	$102.28	8
Nuclear Medicine	331	330	$111.46	6
Hematology-Oncology	314	310	$150.07	11
Emergency Medicine	247	246	$98.10	8
Rheumatology	182	176	$99.32	1

77066 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	60,546	$102.08	$63.70	741
Florida	54,401	$101.26	$74.46	555
New York	32,472	$105.55	$69.44	530
Texas	32,314	$73.06	$53.31	492
Illinois	24,974	$62.17	$42.09	382
Pennsylvania	24,800	$58.99	$41.49	385
North Carolina	20,468	$87.72	$63.99	314
Virginia	19,954	$84.00	$59.09	231
Maryland	17,020	$133.73	$89.55	150
New Jersey	15,641	$114.76	$74.99	285
Georgia	15,529	$76.76	$54.66	246
Massachusetts	15,070	$64.58	$42.71	262
Tennessee	15,016	$70.33	$53.30	227
Arizona	13,504	$116.71	$83.37	128
Ohio	13,436	$51.80	$37.01	273
Washington	11,764	$87.25	$58.15	159
Michigan	10,143	$57.17	$39.29	207
Missouri	10,095	$53.20	$38.36	180
Indiana	9,667	$55.40	$40.12	145
Arkansas	7,901	$71.89	$55.35	78
South Carolina	7,813	$57.46	$42.05	124
Minnesota	7,136	$85.04	$60.60	177
Colorado	6,733	$98.45	$66.87	120
District of Columbia	6,108	$97.03	$63.13	44
Louisiana	6,026	$56.27	$42.64	131
Oklahoma	5,902	$52.91	$38.74	84
Wisconsin	5,731	$63.87	$46.63	178
Kentucky	5,450	$57.05	$42.17	97
Alabama	5,110	$67.05	$52.44	116
Oregon	4,668	$66.08	$47.00	98
Connecticut	4,524	$76.89	$52.10	120
Kansas	4,121	$78.16	$59.16	73
Iowa	3,969	$70.14	$52.57	86
Mississippi	3,745	$61.76	$48.33	72
Nevada	3,376	$114.40	$81.36	61
New Mexico	3,132	$103.08	$76.97	43
Rhode Island	2,783	$89.11	$61.20	35
Delaware	2,154	$93.83	$68.12	33
Puerto Rico	2,145	$124.66	$91.40	45
Nebraska	2,080	$68.22	$51.31	53
Maine	1,838	$46.98	$31.29	40
Hawaii	1,722	$90.55	$59.92	31
South Dakota	1,626	$52.10	$36.17	30
New Hampshire	1,453	$61.63	$44.19	41
Utah	1,420	$59.40	$43.36	50
Idaho	1,357	$50.68	$36.81	34
West Virginia	1,249	$49.79	$34.24	39
North Dakota	1,087	$53.74	$38.63	31
Montana	953	$64.95	$44.46	24
Vermont	773	$45.16	$31.73	22
Alaska	691	$93.92	$55.83	16
Wyoming	687	$96.83	$72.22	22
AP	167	$96.53	$60.54	2
Guam	71	$120.38	$77.31	2
AA	38	$45.96	$35.62	1
U.S. Virgin Islands	13	$153.19	$112.02	1

Related codes

77067Screening mammography$65.10
77063Screening 3d breast mammography$34.08
77080Dxa bone density measurement of hip$21.30
77014Ct guidance for insertion of radiation therapy fields$70.52
77065Diagnostic mammography of 1 breast$64.22
77002Fluoroscopic guidance for needle placement$90.55
77001Fluoroscopic guidance for insertion or removal of central vein access$21.63
77049Mri scan of both breasts$196.04
77081Dxa bone density measurement of forearm$19.89
77012Review by radiologist of ct guidance for needle placement$69.78
77085Dxa bone density measurement of hip$38.47
77092Interpretation of trabecular bone score (tbs) and report on fracture r$9.60

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.