CPT code 77066: Diagnostic mammogram, bilateral, including CAD2026 Medicare rate & RVUs in North Carolina
Reports diagnostic mammographic imaging of both breasts, including computer-aided detection when performed, for symptoms or evaluation of a breast finding.
In North Carolina, Medicare pays $147.87 for 77066 in the office.
Check a contract rate as a % of Medicare · 77066 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 77066 covers
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.
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.
How North Carolina compares for 77066
Across 109 of 109 payment localities, the office rate for 77066 runs from $138.55 in Arkansas to $213.08 in San Benito County, CA. North Carolina pays $147.87. The RVUs are the same everywhere; the geographic indexes change the dollars.
- North Carolina · this page$147.87
- Los Angeles, CA · California$179.68+$31.81
- Washington, DC area · District of Columbia$180.69+$32.82
- Miami, FL · Florida$166.05+$18.18
- Chicago, IL · Illinois$161.28+$13.41
- Manhattan, NY · New York$180.34+$32.47
- Alaska · Alaska$180.05+$32.18
Other areas in North Carolina first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $140.63 | — |
| ArkansasArkansas | $138.55 | — |
| ArizonaArizona | $152.83 | — |
| Bakersfield, CACalifornia | $168.23 | — |
| Chico, CACalifornia | $167.97 | — |
| El Centro, CACalifornia | $167.99 | — |
| Fresno, CACalifornia | $167.97 | — |
| Hanford, CACalifornia | $167.97 | — |
| Madera, CACalifornia | $167.97 | — |
| Merced, CACalifornia | $167.97 | — |
| Modesto, CACalifornia | $167.97 | — |
| Napa, CACalifornia | $196.39 | — |
| Oxnard, CACalifornia | $179.02 | — |
| Redding, CACalifornia | $167.97 | — |
| Rest of CaliforniaCalifornia | $167.97 | — |
| Riverside, CACalifornia | $168.85 | — |
| Sacramento, CACalifornia | $176.74 | — |
| Salinas, CACalifornia | $176.09 | — |
| San Diego, CACalifornia | $180.57 | — |
| Marin County, CACalifornia | $208.50 | — |
| San Francisco, CACalifornia | $208.40 | — |
| San Benito County, CACalifornia | $213.08 | — |
| Santa Clara County, CACalifornia | $212.71 | — |
| San Luis Obispo, CACalifornia | $173.20 | — |
| Santa Cruz, CACalifornia | $182.57 | — |
| Santa Maria, CACalifornia | $176.84 | — |
| Santa Rosa, CACalifornia | $184.45 | — |
| Stockton, CACalifornia | $167.97 | — |
| Vallejo, CACalifornia | $196.26 | — |
| Visalia, CACalifornia | $167.97 | — |
| Yuba City, CACalifornia | $167.97 | — |
| ColoradoColorado | $164.57 | — |
| ConnecticutConnecticut | $167.56 | — |
| DelawareDelaware | $155.42 | — |
| Fort Lauderdale, FLFlorida | $160.72 | — |
| Rest of FloridaFlorida | $152.98 | — |
| Atlanta, GAGeorgia | $159.56 | — |
| Rest of GeorgiaGeorgia | $144.37 | — |
| Hawaii, Guam, HIHawaii | $172.52 | — |
| IowaIowa | $145.04 | — |
| IdahoIdaho | $145.85 | — |
| East St. Louis, ILIllinois | $149.97 | — |
| Rest of IllinoisIllinois | $147.91 | — |
| Suburban Chicago, ILIllinois | $162.56 | — |
| IndianaIndiana | $146.74 | — |
| KansasKansas | $143.99 | — |
| KentuckyKentucky | $143.26 | — |
| New Orleans, LALouisiana | $150.17 | — |
| Rest of LouisianaLouisiana | $142.89 | — |
| Metropolitan Boston, MAMassachusetts | $181.62 | — |
| Rest of MassachusettsMassachusetts | $163.41 | — |
| Baltimore area, MDMaryland | $167.02 | — |
| Rest of MarylandMaryland | $158.55 | — |
| Rest of MaineMaine | $146.25 | — |
| Southern Maine, MEMaine | $154.90 | — |
| Detroit, MIMichigan | $154.56 | — |
| Rest of MichiganMichigan | $146.75 | — |
| MinnesotaMinnesota | $158.63 | — |
| Metropolitan Kansas City, MOMissouri | $149.51 | — |
| Metropolitan St. Louis, MOMissouri | $151.15 | — |
| Rest of MissouriMissouri | $140.14 | — |
| MississippiMississippi | $139.39 | — |
| MontanaMontana | $156.98 | — |
| North DakotaNorth Dakota | $155.40 | — |
| NebraskaNebraska | $145.96 | — |
| New HampshireNew Hampshire | $161.63 | — |
| Northern New JerseyNew Jersey | $178.68 | — |
| Rest of New JerseyNew Jersey | $169.74 | — |
| New MexicoNew Mexico | $147.43 | — |
| NevadaNevada | $156.66 | — |
| NYC suburbs and Long Island, NYNew York | $184.35 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $170.57 | — |
| Queens, NYNew York | $182.39 | — |
| Rest of New YorkNew York | $150.11 | — |
| OhioOhio | $146.43 | — |
| OklahomaOklahoma | $143.38 | — |
| Portland, OROregon | $170.32 | — |
| Rest of OregonOregon | $155.70 | — |
| Metropolitan Philadelphia, PAPennsylvania | $163.07 | — |
| Rest of PennsylvaniaPennsylvania | $146.87 | — |
| Puerto RicoPuerto Rico | $158.28 | — |
| Rhode IslandRhode Island | $161.33 | — |
| South CarolinaSouth Carolina | $147.34 | — |
| South DakotaSouth Dakota | $155.21 | — |
| TennesseeTennessee | $144.68 | — |
| Austin, TXTexas | $163.80 | — |
| Beaumont, TXTexas | $145.85 | — |
| Brazoria, TXTexas | $155.56 | — |
| Dallas, TXTexas | $156.41 | — |
| Fort Worth, TXTexas | $155.23 | — |
| Galveston, TXTexas | $155.94 | — |
| Houston, TXTexas | $157.40 | — |
| Rest of TexasTexas | $150.52 | — |
| UtahUtah | $149.42 | — |
| VirginiaVirginia | $154.13 | — |
| Virgin Islands, VIUnited States Virgin Islands | $158.28 | — |
| VermontVermont | $154.45 | — |
| Rest of WashingtonWashington | $163.21 | — |
| King County, WAWashington | $185.73 | — |
| WisconsinWisconsin | $150.03 | — |
| West VirginiaWest Virginia | $142.21 | — |
| WyomingWyoming | $156.29 | — |
77066 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$138.55
$190.53
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $180.05 | 1 |
| AL | $140.63 | 1 |
| AR | $138.55 | 1 |
| AZ | $152.83 | 1 |
| CA | $167.97–$213.08 | 29 |
| CO | $164.57 | 1 |
| CT | $167.56 | 1 |
| DC | $180.69 | 1 |
| DE | $155.42 | 1 |
| FL | $152.98–$166.05 | 3 |
| GA | $144.37–$159.56 | 2 |
| GU | $172.52 | 1 |
| HI | $172.52 | 1 |
| IA | $145.04 | 1 |
| ID | $145.85 | 1 |
| IL | $147.91–$162.56 | 4 |
| IN | $146.74 | 1 |
| KS | $143.99 | 1 |
| KY | $143.26 | 1 |
| LA | $142.89–$150.17 | 2 |
| MA | $163.41–$181.62 | 2 |
| MD | $158.55–$180.69 | 3 |
| ME | $146.25–$154.90 | 2 |
| MI | $146.75–$154.56 | 2 |
| MN | $158.63 | 1 |
| MO | $140.14–$151.15 | 3 |
| MS | $139.39 | 1 |
| MT | $156.98 | 1 |
| NC | $147.87 | 1 |
| ND | $155.40 | 1 |
| NE | $145.96 | 1 |
| NH | $161.63 | 1 |
| NJ | $169.74–$178.68 | 2 |
| NM | $147.43 | 1 |
| NV | $156.66 | 1 |
| NY | $150.11–$184.35 | 5 |
| OH | $146.43 | 1 |
| OK | $143.38 | 1 |
| OR | $155.70–$170.32 | 2 |
| PA | $146.87–$163.07 | 2 |
| PR | $158.28 | 1 |
| RI | $161.33 | 1 |
| SC | $147.34 | 1 |
| SD | $155.21 | 1 |
| TN | $144.68 | 1 |
| TX | $145.85–$163.80 | 8 |
| UT | $149.42 | 1 |
| VA | $154.13–$180.69 | 2 |
| VI | $158.28 | 1 |
| VT | $154.45 | 1 |
| WA | $163.21–$185.73 | 2 |
| WI | $150.03 | 1 |
| WV | $142.21 | 1 |
| WY | $156.29 | 1 |
How the 77066 rate is calculated
Each of 77066’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 77066
RVUs × geographic indexes × conversion factor
Work0.98
0.98 RVUs× 1.000 GPCI
Practice expense3.64
3.64 RVUs× 1.000 GPCI
Malpractice0.08
0.08 RVUs× 1.000 GPCI
Adjusted RVUs
4.7000
Conversion factor
$33.4009
Medicare rate
$156.98
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact North Carolina inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
8,979
- Code
- 77066
- Physician work
- 0.98
- Practice expense
- 3.64
- Malpractice
- 0.08
GPCI2026.csv
83
- Locality
- North Carolina
- Physician work
- 1.000
- Practice expense
- 0.933
- Malpractice
- 0.639
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.98 | × 1.000 | 0.9800 |
| Practice expense | 3.64 | × 0.933 | 3.3961 |
| Malpractice | 0.08 | × 0.639 | 0.0511 |
| Total RVUs | 4.4272 | ||
| Conversion factor | × 33.4009 | ||
Office rate, North Carolina$147.87
Office: (0.98 × 1 + 3.64 × 0.933 + 0.08 × 0.639) × $33.4009 = $147.87
Payment rules and modifiers for 77066
The CMS indicators that decide how 77066 is paid alongside other services.
CMS payment indicators · 77066
Diagnostic mammogram, bilateral, including CAD
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 2 | Already bilateral by definition: paid once at 100%. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
77066 without 26 · national office
$156.98
Diagnostic mammogram, bilateral, including CAD
77066-26 · Professional component
$46.43
Pays only the interpretation and report.
How 77066 has changed in North Carolina
77066 · Office / nonfacility
$147.87
Effective 2026-10-01
The base rate is $3.71 higher than on 2025-10-01, moving from $144.16 to $147.87 (2.6%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
January 1, 2026
RVU26A
$144.16changed to$147.87
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 1.00 changed to 0.98
- Practice expense RVU 3.69 changed to 3.64
- Malpractice RVU 0.06 changed to 0.08
- Practice expense GPCI 0.926 changed to 0.933
- Malpractice GPCI 0.665 changed to 0.639
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$148.58changed to$144.16
- Conversion factor 33.2875 changed to 32.3465
- Malpractice RVU 0.07 changed to 0.06
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$146.15changed to$148.58
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$151.06changed to$146.15
- Conversion factor 33.8872 changed to 32.7442
- Malpractice RVU 0.05 changed to 0.07
- Practice expense GPCI 0.927 changed to 0.926
- Malpractice GPCI 0.742 changed to 0.665
January 1, 2023
RVU23A
$154.81changed to$151.06
- Conversion factor 34.6062 changed to 33.8872
- Malpractice RVU 0.06 changed to 0.05
- Practice expense GPCI 0.928 changed to 0.927
- Malpractice GPCI 0.819 changed to 0.742
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$156.42changed to$154.81
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 3.70 changed to 3.69
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$161.91changed to$156.42
- Conversion factor 36.0896 changed to 34.8931
- Practice expense GPCI 0.930 changed to 0.928
- Malpractice GPCI 0.757 changed to 0.819
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$161.94changed to$161.91
- Conversion factor 36.0391 changed to 36.0896
- Malpractice RVU 0.07 changed to 0.06
- Practice expense GPCI 0.931 changed to 0.930
- Malpractice GPCI 0.695 changed to 0.757
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$164.10changed to$161.94
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 3.77 changed to 3.70
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
No ratechanged to$164.10
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
No ratechanged toNo rate
Held through RVU17B, RVU17C, RVU17D.
January 1, 2013
RVU13AR
Earliest loaded release: No rate
Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $147.87 | Not available in this setting | RVU26D |
| 2026-07-01 | $147.87 | Not available in this setting | RVU26C |
| 2026-04-01 | $147.87 | Not available in this setting | RVU26B |
| 2026-01-01 | $147.87 | Not available in this setting | RVU26A |
| 2025-10-01 | $144.16 | Not available in this setting | RVU25D |
| 2025-07-01 | $144.16 | Not available in this setting | RVU25C |
| 2025-04-01 | $144.16 | Not available in this setting | RVU25B |
| 2025-01-01 | $144.16 | Not available in this setting | RVU25A |
| 2024-10-01 | $148.58 | Not available in this setting | RVU24D |
| 2024-07-01 | $148.58 | Not available in this setting | RVU24C |
| 2024-04-01 | $148.58 | Not available in this setting | RVU24B |
| 2024-03-09 | $148.58 | Not available in this setting | RVU24AR |
| 2024-01-01 | $146.15 | Not available in this setting | RVU24A |
| 2023-10-01 | $151.06 | Not available in this setting | RVU23D |
| 2023-07-01 | $151.06 | Not available in this setting | RVU23C |
| 2023-04-01 | $151.06 | Not available in this setting | RVU23B |
| 2023-01-01 | $151.06 | Not available in this setting | RVU23A |
| 2022-10-01 | $154.81 | Not available in this setting | RVU22D |
| 2022-07-01 | $154.81 | Not available in this setting | RVU22C |
| 2022-04-01 | $154.81 | Not available in this setting | RVU22B |
| 2022-01-01 | $154.81 | Not available in this setting | RVU22A |
| 2021-10-01 | $156.42 | Not available in this setting | RVU21D |
| 2021-07-01 | $156.42 | Not available in this setting | RVU21C |
| 2021-04-01 | $156.42 | Not available in this setting | RVU21B |
| 2021-01-01 | $156.42 | Not available in this setting | RVU21A |
| 2020-10-01 | $161.91 | Not available in this setting | RVU20D |
| 2020-07-01 | $161.91 | Not available in this setting | RVU20C |
| 2020-04-01 | $161.91 | Not available in this setting | RVU20B |
| 2020-01-01 | $161.91 | Not available in this setting | RVU20A |
| 2019-10-01 | $161.94 | Not available in this setting | RVU19D |
| 2019-07-01 | $161.94 | Not available in this setting | RVU19C |
| 2019-04-01 | $161.94 | Not available in this setting | RVU19B |
| 2019-01-01 | $161.94 | Not available in this setting | RVU19A |
| 2018-10-01 | $164.10 | Not available in this setting | RVU18D |
| 2018-07-01 | $164.10 | Not available in this setting | RVU18C |
| 2018-04-01 | $164.10 | Not available in this setting | RVU18B |
| 2018-01-01 | $164.10 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | Separate payment rules apply | Separate payment rules apply | RVU17D |
| 2017-07-01 | Separate payment rules apply | Separate payment rules apply | RVU17C |
| 2017-04-01 | Separate payment rules apply | Separate payment rules apply | RVU17B |
| 2017-01-01 | Separate payment rules apply | Separate payment rules apply | RVU17A |
| 2016-10-01 | Not in this release | Not in this release | RVU16D |
| 2016-07-01 | Not in this release | Not in this release | RVU16C |
| 2016-04-01 | Not in this release | Not in this release | RVU16B |
| 2016-01-01 | Not in this release | Not in this release | RVU16A |
| 2015-10-01 | Not in this release | Not in this release | RVU15D |
| 2015-07-01 | Not in this release | Not in this release | RVU15C |
| 2015-04-01 | Not in this release | Not in this release | RVU15B |
| 2015-01-01 | Not in this release | Not in this release | RVU15A |
| 2014-10-01 | Not in this release | Not in this release | RVU14D |
| 2014-07-01 | Not in this release | Not in this release | RVU14C |
| 2014-04-01 | Not in this release | Not in this release | RVU14B |
| 2014-01-01 | Not in this release | Not in this release | RVU14A |
| 2013-10-01 | Not in this release | Not in this release | RVU13D |
| 2013-07-01 | Not in this release | Not in this release | RVU13C |
| 2013-04-01 | Not in this release | Not in this release | RVU13B |
| 2013-01-01 | Not in this release | Not in this release | RVU13AR |
Where the North Carolina rate applies
North Carolina is a Medicare payment area, not a city. Our Census mapping connects it to 785 cities and communities in North Carolina. Some span more than one payment area; confirm with the service ZIP.
- Aberdeen
- Advance
- Ahoskie
- Alamance
- Albemarle
- Alexis
- Alliance
- Altamahaw
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 indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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