$129.00–$143.31
This code covers diagnostic imaging of both breasts; 77065 is for a unilateral diagnostic examination.
On this page
CMS RVU26D · Effective 2026-10-01
77066 Diagnostic mammogram Medicare reimbursement rates in Massachusetts
Reports diagnostic mammographic imaging of both breasts, including computer-aided detection when performed, for symptoms or evaluation of a breast finding. Compare 77066 office and facility rates across CMS payment localities in Massachusetts.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 77066 in Massachusetts?
Massachusetts has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
$163.41–$181.62
2 of 2 localities have a supported rate.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Radiology
About 77066: Bilateral diagnostic mammography
Reports diagnostic mammographic imaging of both breasts, including computer-aided detection when performed, for symptoms or evaluation of a breast finding.
This service covers diagnostic mammographic imaging of both breasts, with computer-aided detection included when performed. It is commonly used to evaluate symptoms such as a palpable breast lump or nipple discharge, investigate a finding on a screening study, or assess a known breast abnormality. A radiologist interprets the images, typically in a breast imaging department, hospital, or outpatient imaging center.
Select this code when the diagnostic examination includes both breasts; use the unilateral code when only one breast is examined. The report should support the diagnostic reason and identify the bilateral study and its interpretation. CMS recognizes separately priced professional and technical components: modifier 26 identifies interpretation, modifier TC identifies equipment and staff, and no modifier represents the global service. The code is already priced bilaterally, so modifier 50 does not increase payment.
CMS billing rules for 77066
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
- Bilateral procedures
- The code is already priced as bilateral; modifier 50 does not increase payment.
Where the value comes from
- Work RVU0.98 · 21%
- Practice expense (office) RVU3.64 · 77%
- Malpractice RVU0.08 · 2%
559.8K
Medicare services in 2024 · #212 by national volume
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
77066 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
$131.60–$146.46
Use 77067 for bilateral screening mammography in an asymptomatic screening encounter. This code is for diagnostic evaluation, such as workup of a symptom or abnormal finding.
77062
No office rateBreast tomosynthesis bi
77062 reports bilateral diagnostic breast tomosynthesis. This code reports bilateral diagnostic mammography; both may be reported when both services are performed.
$353.55–$392.51
77049 is bilateral breast MRI with and without contrast, a different modality from diagnostic mammography.
Compare 77066 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Metropolitan Boston →
Office / nonfacility
$181.62
Facility
Unavailable
Rest Of Massachusetts →
Office / nonfacility
$163.41
Facility
Unavailable
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77066 billing questions
When should I report this instead of the unilateral diagnostic mammogram?
Report this code when the diagnostic mammographic examination covers both breasts. Use the unilateral code when the examination covers one breast.
Is computer-aided detection billed separately?
No. CAD is included in this diagnostic mammography code when performed.
Should modifier 50 be appended?
No. The code is already priced as bilateral, and modifier 50 does not increase payment.
When are modifiers 26 and TC appropriate?
Use modifier 26 for the professional interpretation and modifier TC for the technical service, including equipment and staff. Without either modifier, the claim represents the global service.
Can bilateral diagnostic tomosynthesis be reported with this code?
When bilateral diagnostic breast tomosynthesis is also performed, code 77062 may be reported for that service alongside the diagnostic mammography.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
8,97677065,,Dx mammo incl cad uni,A,,0.79,2.86,,2.86,NA,0.06,3.71,3.71,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,97777065,26,Dx mammo incl cad uni,A,,0.79,0.29,,0.29,,0.05,1.13,1.13,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,97877065,TC,Dx mammo incl cad uni,A,,0.00,2.57,,2.57,NA,0.01,2.58,2.58,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,97977066,,Dx mammo incl cad bi,A,,0.98,3.64,,3.64,NA,0.08,4.70,4.70,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,98077066,26,Dx mammo incl cad bi,A,,0.98,0.35,,0.35,,0.06,1.39,1.39,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,98177066,TC,Dx mammo incl cad bi,A,,0.00,3.29,,3.29,NA,0.02,3.31,3.31,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,98277067,,Scr mammo bi incl cad,A,,0.74,2.99,,2.99,NA,0.05,3.78,3.78,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00