CPT code 76813: Nuchal translucency, single or first gestation2026 Medicare rate & RVUs in King County, WA
Reports a first-trimester ultrasound measurement of fetal nuchal translucency for one fetus or the first fetus in a multiple gestation.
In King County, WA, Medicare pays $134.04 for 76813 in the office.
Check a contract rate as a % of Medicare · 76813 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 76813 covers
This obstetric ultrasound measures the fluid-filled space at the back of the fetal neck during first-trimester screening for chromosomal abnormalities. An ultrasound technologist or physician acquires the images, and an interpreting physician—often an obstetrician, radiologist, or maternal-fetal medicine specialist—documents the measurement. The scan may use a transabdominal or transvaginal approach, depending on the clinical circumstances and image quality.
Report 76813 for one fetus or the first fetus in a multiple gestation; report 76814 for each additional gestation when its measurement is performed. Documentation should support the number of fetuses assessed, the nuchal translucency measurement, image acquisition, and the physician’s interpretation. CMS recognizes professional and technical components: bill modifier 26 for interpretation, modifier TC for equipment and staff, or neither modifier for the global service. The professional and technical components have separate payment rates.
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 King County, WA compares for 76813
Across 109 of 109 payment localities, the office rate for 76813 runs from $103.88 in Arkansas to $151.78 in San Benito County, CA. King County, WA pays $134.04. The RVUs are the same everywhere; the geographic indexes change the dollars.
- King County, WA · this page$134.04
- Rest of Washington · Washington$119.47−$14.57
- Los Angeles, CA · California$130.05−$3.99
- Washington, DC area · District of Columbia$131.22−$2.82
- Miami, FL · Florida$122.21−$11.83
- Chicago, IL · Illinois$119.24−$14.80
- Manhattan, NY · New York$131.52−$2.52
Other areas in Washington first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlaskaAlaska | $138.59 | — |
| AlabamaAlabama | $105.20 | — |
| ArkansasArkansas | $103.88 | — |
| ArizonaArizona | $112.91 | — |
| Bakersfield, CACalifornia | $122.57 | — |
| Chico, CACalifornia | $122.32 | — |
| El Centro, CACalifornia | $122.33 | — |
| Fresno, CACalifornia | $122.32 | — |
| Hanford, CACalifornia | $122.32 | — |
| Madera, CACalifornia | $122.32 | — |
| Merced, CACalifornia | $122.32 | — |
| Modesto, CACalifornia | $122.32 | — |
| Napa, CACalifornia | $140.63 | — |
| Oxnard, CACalifornia | $129.38 | — |
| Redding, CACalifornia | $122.32 | — |
| Rest of CaliforniaCalifornia | $122.32 | — |
| Riverside, CACalifornia | $123.10 | — |
| Sacramento, CACalifornia | $128.06 | — |
| Salinas, CACalifornia | $127.57 | — |
| San Diego, CACalifornia | $130.31 | — |
| Marin County, CACalifornia | $148.63 | — |
| San Francisco, CACalifornia | $148.55 | — |
| San Benito County, CACalifornia | $151.78 | — |
| Santa Clara County, CACalifornia | $151.45 | — |
| San Luis Obispo, CACalifornia | $125.53 | — |
| Santa Cruz, CACalifornia | $131.37 | — |
| Santa Maria, CACalifornia | $127.98 | — |
| Santa Rosa, CACalifornia | $132.69 | — |
| Stockton, CACalifornia | $122.32 | — |
| Vallejo, CACalifornia | $140.51 | — |
| Visalia, CACalifornia | $122.32 | — |
| Yuba City, CACalifornia | $122.32 | — |
| ColoradoColorado | $120.30 | — |
| ConnecticutConnecticut | $122.59 | — |
| DelawareDelaware | $114.63 | — |
| Fort Lauderdale, FLFlorida | $118.43 | — |
| Rest of FloridaFlorida | $113.45 | — |
| Atlanta, GAGeorgia | $117.35 | — |
| Rest of GeorgiaGeorgia | $107.94 | — |
| Hawaii, Guam, HIHawaii | $124.83 | — |
| IowaIowa | $107.80 | — |
| IdahoIdaho | $108.35 | — |
| East St. Louis, ILIllinois | $111.95 | — |
| Rest of IllinoisIllinois | $110.37 | — |
| Suburban Chicago, ILIllinois | $119.66 | — |
| IndianaIndiana | $108.90 | — |
| KansasKansas | $107.22 | — |
| KentuckyKentucky | $107.06 | — |
| New Orleans, LALouisiana | $111.47 | — |
| Rest of LouisianaLouisiana | $106.86 | — |
| Metropolitan Boston, MAMassachusetts | $131.40 | — |
| Rest of MassachusettsMassachusetts | $119.67 | — |
| Baltimore area, MDMaryland | $122.20 | — |
| Rest of MarylandMaryland | $116.66 | — |
| Rest of MaineMaine | $108.70 | — |
| Southern Maine, MEMaine | $114.03 | — |
| Detroit, MIMichigan | $114.55 | — |
| Rest of MichiganMichigan | $109.36 | — |
| MinnesotaMinnesota | $116.09 | — |
| Metropolitan Kansas City, MOMissouri | $110.95 | — |
| Metropolitan St. Louis, MOMissouri | $111.98 | — |
| Rest of MissouriMissouri | $105.18 | — |
| MississippiMississippi | $104.56 | — |
| MontanaMontana | $115.56 | — |
| North CarolinaNorth Carolina | $109.71 | — |
| North DakotaNorth Dakota | $114.18 | — |
| NebraskaNebraska | $108.35 | — |
| New HampshireNew Hampshire | $118.34 | — |
| Northern New JerseyNew Jersey | $130.12 | — |
| Rest of New JerseyNew Jersey | $124.21 | — |
| New MexicoNew Mexico | $109.83 | — |
| NevadaNevada | $115.25 | — |
| NYC suburbs and Long Island, NYNew York | $134.17 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $124.89 | — |
| Queens, NYNew York | $132.68 | — |
| Rest of New YorkNew York | $111.13 | — |
| OhioOhio | $109.08 | — |
| OklahomaOklahoma | $107.04 | — |
| Portland, OROregon | $123.89 | — |
| Rest of OregonOregon | $114.57 | — |
| Metropolitan Philadelphia, PAPennsylvania | $119.78 | — |
| Rest of PennsylvaniaPennsylvania | $109.30 | — |
| Puerto RicoPuerto Rico | $116.36 | — |
| Rhode IslandRhode Island | $118.51 | — |
| South CarolinaSouth Carolina | $109.53 | — |
| South DakotaSouth Dakota | $114.01 | — |
| TennesseeTennessee | $107.68 | — |
| Austin, TXTexas | $119.72 | — |
| Beaumont, TXTexas | $108.67 | — |
| Brazoria, TXTexas | $114.69 | — |
| Dallas, TXTexas | $115.28 | — |
| Fort Worth, TXTexas | $114.56 | — |
| Galveston, TXTexas | $114.95 | — |
| Houston, TXTexas | $116.23 | — |
| Rest of TexasTexas | $111.52 | — |
| UtahUtah | $110.84 | — |
| VirginiaVirginia | $113.61 | — |
| Virgin Islands, VIUnited States Virgin Islands | $116.36 | — |
| VermontVermont | $113.66 | — |
| WisconsinWisconsin | $110.81 | — |
| West VirginiaWest Virginia | $106.77 | — |
| WyomingWyoming | $114.96 | — |
76813 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.
$103.88
$138.59
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 | $138.59 | 1 |
| AL | $105.20 | 1 |
| AR | $103.88 | 1 |
| AZ | $112.91 | 1 |
| CA | $122.32–$151.78 | 29 |
| CO | $120.30 | 1 |
| CT | $122.59 | 1 |
| DC | $131.22 | 1 |
| DE | $114.63 | 1 |
| FL | $113.45–$122.21 | 3 |
| GA | $107.94–$117.35 | 2 |
| GU | $124.83 | 1 |
| HI | $124.83 | 1 |
| IA | $107.80 | 1 |
| ID | $108.35 | 1 |
| IL | $110.37–$119.66 | 4 |
| IN | $108.90 | 1 |
| KS | $107.22 | 1 |
| KY | $107.06 | 1 |
| LA | $106.86–$111.47 | 2 |
| MA | $119.67–$131.40 | 2 |
| MD | $116.66–$131.22 | 3 |
| ME | $108.70–$114.03 | 2 |
| MI | $109.36–$114.55 | 2 |
| MN | $116.09 | 1 |
| MO | $105.18–$111.98 | 3 |
| MS | $104.56 | 1 |
| MT | $115.56 | 1 |
| NC | $109.71 | 1 |
| ND | $114.18 | 1 |
| NE | $108.35 | 1 |
| NH | $118.34 | 1 |
| NJ | $124.21–$130.12 | 2 |
| NM | $109.83 | 1 |
| NV | $115.25 | 1 |
| NY | $111.13–$134.17 | 5 |
| OH | $109.08 | 1 |
| OK | $107.04 | 1 |
| OR | $114.57–$123.89 | 2 |
| PA | $109.30–$119.78 | 2 |
| PR | $116.36 | 1 |
| RI | $118.51 | 1 |
| SC | $109.53 | 1 |
| SD | $114.01 | 1 |
| TN | $107.68 | 1 |
| TX | $108.67–$119.72 | 8 |
| UT | $110.84 | 1 |
| VA | $113.61–$131.22 | 2 |
| VI | $116.36 | 1 |
| VT | $113.66 | 1 |
| WA | $119.47–$134.04 | 2 |
| WI | $110.81 | 1 |
| WV | $106.77 | 1 |
| WY | $114.96 | 1 |
How the 76813 rate is calculated
Each of 76813’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 · 76813
RVUs × geographic indexes × conversion factor
Work1.15
1.15 RVUs× 1.000 GPCI
Practice expense2.24
2.24 RVUs× 1.000 GPCI
Malpractice0.07
0.07 RVUs× 1.000 GPCI
Adjusted RVUs
3.4600
Conversion factor
$33.4009
Medicare rate
$115.57
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact King County, WA inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
8,781
- Code
- 76813
- Physician work
- 1.15
- Practice expense
- 2.24
- Malpractice
- 0.07
GPCI2026.csv
108
- Locality
- King County, WA
- Physician work
- 1.050
- Practice expense
- 1.227
- Malpractice
- 0.817
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.15 | × 1.050 | 1.2075 |
| Practice expense | 2.24 | × 1.227 | 2.7485 |
| Malpractice | 0.07 | × 0.817 | 0.0572 |
| Total RVUs | 4.0132 | ||
| Conversion factor | × 33.4009 | ||
Office rate, King County, WA$134.04
Office: (1.15 × 1.05 + 2.24 × 1.227 + 0.07 × 0.817) × $33.4009 = $134.04
Payment rules and modifiers for 76813
The CMS indicators that decide how 76813 is paid alongside other services.
CMS payment indicators · 76813
Nuchal translucency, single or first gestation
| 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) | 0 | The 150% bilateral adjustment doesn’t apply. |
| 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
76813 without 26 · national office
$115.57
Nuchal translucency, single or first gestation
76813-26 · Professional component
$56.45
Pays only the interpretation and report.
How 76813 has changed in King County, WA
76813 · Office / nonfacility
$134.04
Effective 2026-10-01
The base rate is $7.10 higher than on 2025-10-01, moving from $126.94 to $134.04 (5.6%).
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
$126.94changed to$134.04
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 1.18 changed to 1.15
- Practice expense RVU 2.18 changed to 2.24
- Malpractice RVU 0.04 changed to 0.07
- Work GPCI 1.043 changed to 1.050
- Practice expense GPCI 1.220 changed to 1.227
- Malpractice GPCI 0.853 changed to 0.817
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$133.48changed to$126.94
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 2.25 changed to 2.18
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$131.30changed to$133.48
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$136.59changed to$131.30
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 2.29 changed to 2.25
- Malpractice RVU 0.05 changed to 0.04
- Work GPCI 1.039 changed to 1.043
- Practice expense GPCI 1.207 changed to 1.220
- Malpractice GPCI 0.815 changed to 0.853
January 1, 2023
RVU23A
$138.68changed to$136.59
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 2.30 changed to 2.29
- Work GPCI 1.036 changed to 1.039
- Practice expense GPCI 1.194 changed to 1.207
- Malpractice GPCI 0.776 changed to 0.815
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$141.50changed to$138.68
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 2.34 changed to 2.30
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$137.81changed to$141.50
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 2.18 changed to 2.34
- Malpractice RVU 0.06 changed to 0.05
- Work GPCI 1.031 changed to 1.036
- Practice expense GPCI 1.170 changed to 1.194
- Malpractice GPCI 0.854 changed to 0.776
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$136.57changed to$137.81
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 2.16 changed to 2.18
- Malpractice RVU 0.11 changed to 0.06
- Work GPCI 1.027 changed to 1.031
- Practice expense GPCI 1.146 changed to 1.170
- Malpractice GPCI 0.931 changed to 0.854
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$137.66changed to$136.57
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 2.19 changed to 2.16
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$137.14changed to$137.66
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 2.20 changed to 2.19
- Work GPCI 1.026 changed to 1.027
- Practice expense GPCI 1.151 changed to 1.146
- Malpractice GPCI 0.713 changed to 0.931
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$134.17changed to$137.14
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 2.15 changed to 2.20
- Work GPCI 1.025 changed to 1.026
- Practice expense GPCI 1.155 changed to 1.151
- Malpractice GPCI 0.495 changed to 0.713
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$134.83changed to$134.17
- Conversion factor 35.9335 changed to 35.8043
- Malpractice RVU 0.12 changed to 0.11
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$134.16changed to$134.83
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$134.78changed to$134.16
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 2.19 changed to 2.15
- Malpractice RVU 0.05 changed to 0.12
- Practice expense GPCI 1.150 changed to 1.155
- Malpractice GPCI 0.688 changed to 0.495
Held through RVU15B.
January 1, 2014
RVU14A
$136.84changed to$134.78
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 2.42 changed to 2.19
- Practice expense GPCI 1.144 changed to 1.150
- Malpractice GPCI 0.881 changed to 0.688
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $136.84
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $134.04 | Not available in this setting | RVU26D |
| 2026-07-01 | $134.04 | Not available in this setting | RVU26C |
| 2026-04-01 | $134.04 | Not available in this setting | RVU26B |
| 2026-01-01 | $134.04 | Not available in this setting | RVU26A |
| 2025-10-01 | $126.94 | Not available in this setting | RVU25D |
| 2025-07-01 | $126.94 | Not available in this setting | RVU25C |
| 2025-04-01 | $126.94 | Not available in this setting | RVU25B |
| 2025-01-01 | $126.94 | Not available in this setting | RVU25A |
| 2024-10-01 | $133.48 | Not available in this setting | RVU24D |
| 2024-07-01 | $133.48 | Not available in this setting | RVU24C |
| 2024-04-01 | $133.48 | Not available in this setting | RVU24B |
| 2024-03-09 | $133.48 | Not available in this setting | RVU24AR |
| 2024-01-01 | $131.30 | Not available in this setting | RVU24A |
| 2023-10-01 | $136.59 | Not available in this setting | RVU23D |
| 2023-07-01 | $136.59 | Not available in this setting | RVU23C |
| 2023-04-01 | $136.59 | Not available in this setting | RVU23B |
| 2023-01-01 | $136.59 | Not available in this setting | RVU23A |
| 2022-10-01 | $138.68 | Not available in this setting | RVU22D |
| 2022-07-01 | $138.68 | Not available in this setting | RVU22C |
| 2022-04-01 | $138.68 | Not available in this setting | RVU22B |
| 2022-01-01 | $138.68 | Not available in this setting | RVU22A |
| 2021-10-01 | $141.50 | Not available in this setting | RVU21D |
| 2021-07-01 | $141.50 | Not available in this setting | RVU21C |
| 2021-04-01 | $141.50 | Not available in this setting | RVU21B |
| 2021-01-01 | $141.50 | Not available in this setting | RVU21A |
| 2020-10-01 | $137.81 | Not available in this setting | RVU20D |
| 2020-07-01 | $137.81 | Not available in this setting | RVU20C |
| 2020-04-01 | $137.81 | Not available in this setting | RVU20B |
| 2020-01-01 | $137.81 | Not available in this setting | RVU20A |
| 2019-10-01 | $136.57 | Not available in this setting | RVU19D |
| 2019-07-01 | $136.57 | Not available in this setting | RVU19C |
| 2019-04-01 | $136.57 | Not available in this setting | RVU19B |
| 2019-01-01 | $136.57 | Not available in this setting | RVU19A |
| 2018-10-01 | $137.66 | Not available in this setting | RVU18D |
| 2018-07-01 | $137.66 | Not available in this setting | RVU18C |
| 2018-04-01 | $137.66 | Not available in this setting | RVU18B |
| 2018-01-01 | $137.66 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $137.14 | Not available in this setting | RVU17D |
| 2017-07-01 | $137.14 | Not available in this setting | RVU17C |
| 2017-04-01 | $137.14 | Not available in this setting | RVU17B |
| 2017-01-01 | $137.14 | Not available in this setting | RVU17A |
| 2016-10-01 | $134.17 | Not available in this setting | RVU16D |
| 2016-07-01 | $134.17 | Not available in this setting | RVU16C |
| 2016-04-01 | $134.17 | Not available in this setting | RVU16B |
| 2016-01-01 | $134.17 | Not available in this setting | RVU16A |
| 2015-10-01 | $134.83 | Not available in this setting | RVU15D |
| 2015-07-01 | $134.83 | Not available in this setting | RVU15C |
| 2015-04-01 | $134.16 | Not available in this setting | RVU15B |
| 2015-01-01 | $134.16 | Not available in this setting | RVU15A |
| 2014-10-01 | $134.78 | Not available in this setting | RVU14D |
| 2014-07-01 | $134.78 | Not available in this setting | RVU14C |
| 2014-04-01 | $134.78 | Not available in this setting | RVU14B |
| 2014-01-01 | $134.78 | Not available in this setting | RVU14A |
| 2013-10-01 | $136.84 | Not available in this setting | RVU13D |
| 2013-07-01 | $136.84 | Not available in this setting | RVU13C |
| 2013-04-01 | $136.84 | Not available in this setting | RVU13B |
| 2013-01-01 | $136.84 | Not available in this setting | RVU13AR |
Where the King County, WA rate applies
King County, WA is a Medicare payment area, not a city. Our Census mapping connects it to 63 cities and communities in Washington. Some span more than one payment area; confirm with the service ZIP.
- Seattle
- Algona
- Ames Lake
- 76813 in Auburn · multiple payment areas
- Baring
- Beaux Arts Village
- Bellevue
- Black Diamond
76813 billing questions
How does 76813 differ from 76801?
76813 reports the first-trimester nuchal translucency measurement. 76801 is for a first-trimester obstetric ultrasound examination, rather than the specific NT measurement.
How is 76813 used for a multiple gestation?
Report 76813 for the first fetus assessed and 76814 for each additional fetus with a separately performed NT measurement.
Can the professional and technical services be billed separately?
Yes. Use modifier 26 for the physician’s interpretation or modifier TC for the equipment and staff; billing without either modifier represents the global service.
What documentation supports 76813?
The record should identify the fetus assessed and include the NT measurement, supporting images, and the interpreting physician’s findings.
Does 76813 represent a complete first-trimester anatomy survey?
No. It represents the nuchal translucency measurement; use 76801 when a complete first-trimester obstetric ultrasound examination is performed and documented.
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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