CPT code 77370: Radiation physics consult, unusual treatment circumstances2026 Medicare rate & RVUs in South Dakota
A medical physicist performs a physician-requested, case-specific analysis or measurement for unusual radiation treatment circumstances beyond routine planning and review.
In South Dakota, Medicare pays $147.65 for 77370 in the office.
Check a contract rate as a % of Medicare · 77370 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 77370 covers
A radiation oncologist may request a medical physicist’s focused analysis when a patient’s treatment presents unusual technical circumstances. The physicist may perform case-specific calculations or measurements and assess how those findings affect the treatment setup or delivery. This work is distinct from routine dose planning and ongoing physics review during a course of radiation therapy.
Report 77370 for the special technical consultation, supported by the physician’s request and a written physicist report describing the unusual circumstance, work performed, and findings. The record should show why routine planning or review was insufficient. CMS classifies this as a technical-component-only code; a separate code covers interpretation. The fee schedule assigns no physician work RVUs to this code, reflecting that its reported service is the technical physics work rather than interpretation.
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 South Dakota compares for 77370
Across 109 of 109 payment localities, the office rate for 77370 runs from $127.96 in Arkansas to $213.16 in San Benito County, CA. South Dakota pays $147.65. The RVUs are the same everywhere; the geographic indexes change the dollars.
- South Dakota · this page$147.65
- Los Angeles, CA · California$176.00+$28.35
- Washington, DC area · District of Columbia$177.52+$29.87
- Miami, FL · Florida$164.62+$16.97
- Chicago, IL · Illinois$158.19+$10.54
- Manhattan, NY · New York$177.55+$29.90
- Alaska · Alaska$158.21+$10.56
Other areas in South Dakota first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $130.55 | — |
| ArkansasArkansas | $127.96 | — |
| ArizonaArizona | $145.73 | — |
| Bakersfield, CACalifornia | $163.03 | — |
| Chico, CACalifornia | $162.66 | — |
| El Centro, CACalifornia | $162.68 | — |
| Fresno, CACalifornia | $162.66 | — |
| Hanford, CACalifornia | $162.66 | — |
| Madera, CACalifornia | $162.66 | — |
| Merced, CACalifornia | $162.66 | — |
| Modesto, CACalifornia | $162.66 | — |
| Napa, CACalifornia | $194.92 | — |
| Oxnard, CACalifornia | $175.65 | — |
| Redding, CACalifornia | $162.66 | — |
| Rest of CaliforniaCalifornia | $162.66 | — |
| Riverside, CACalifornia | $164.25 | — |
| Sacramento, CACalifornia | $172.44 | — |
| Salinas, CACalifornia | $171.86 | — |
| San Diego, CACalifornia | $177.29 | — |
| Marin County, CACalifornia | $208.11 | — |
| San Francisco, CACalifornia | $207.94 | — |
| San Benito County, CACalifornia | $213.16 | — |
| Santa Clara County, CACalifornia | $212.47 | — |
| San Luis Obispo, CACalifornia | $168.94 | — |
| Santa Cruz, CACalifornia | $180.03 | — |
| Santa Maria, CACalifornia | $172.88 | — |
| Santa Rosa, CACalifornia | $181.93 | — |
| Stockton, CACalifornia | $162.66 | — |
| Vallejo, CACalifornia | $194.68 | — |
| Visalia, CACalifornia | $162.66 | — |
| Yuba City, CACalifornia | $162.66 | — |
| ColoradoColorado | $159.22 | — |
| ConnecticutConnecticut | $163.26 | — |
| DelawareDelaware | $148.71 | — |
| Fort Lauderdale, FLFlorida | $156.92 | — |
| Rest of FloridaFlorida | $147.07 | — |
| Atlanta, GAGeorgia | $154.31 | — |
| Rest of GeorgiaGeorgia | $136.17 | — |
| Hawaii, Guam, HIHawaii | $168.86 | — |
| IowaIowa | $135.54 | — |
| IdahoIdaho | $136.65 | — |
| East St. Louis, ILIllinois | $144.38 | — |
| Rest of IllinoisIllinois | $141.09 | — |
| Suburban Chicago, ILIllinois | $158.78 | — |
| IndianaIndiana | $137.74 | — |
| KansasKansas | $134.47 | — |
| KentuckyKentucky | $134.34 | — |
| New Orleans, LALouisiana | $143.04 | — |
| Rest of LouisianaLouisiana | $133.98 | — |
| Metropolitan Boston, MAMassachusetts | $178.74 | — |
| Rest of MassachusettsMassachusetts | $157.69 | — |
| Baltimore area, MDMaryland | $162.81 | — |
| Rest of MarylandMaryland | $152.31 | — |
| Rest of MaineMaine | $137.40 | — |
| Southern Maine, MEMaine | $147.81 | — |
| Detroit, MIMichigan | $149.30 | — |
| Rest of MichiganMichigan | $138.92 | — |
| MinnesotaMinnesota | $151.68 | — |
| Metropolitan Kansas City, MOMissouri | $141.95 | — |
| Metropolitan St. Louis, MOMissouri | $143.98 | — |
| Rest of MissouriMissouri | $130.70 | — |
| MississippiMississippi | $129.38 | — |
| MontanaMontana | $150.96 | — |
| North CarolinaNorth Carolina | $139.38 | — |
| North DakotaNorth Dakota | $148.00 | — |
| NebraskaNebraska | $136.62 | — |
| New HampshireNew Hampshire | $156.33 | — |
| Northern New JerseyNew Jersey | $174.67 | — |
| Rest of New JerseyNew Jersey | $164.89 | — |
| New MexicoNew Mexico | $139.86 | — |
| NevadaNevada | $150.28 | — |
| NYC suburbs and Long Island, NYNew York | $182.85 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $165.89 | — |
| Queens, NYNew York | $179.75 | — |
| Rest of New YorkNew York | $142.19 | — |
| OhioOhio | $138.31 | — |
| OklahomaOklahoma | $134.24 | — |
| Portland, OROregon | $165.89 | — |
| Rest of OregonOregon | $148.90 | — |
| Metropolitan Philadelphia, PAPennsylvania | $157.92 | — |
| Rest of PennsylvaniaPennsylvania | $138.73 | — |
| Puerto RicoPuerto Rico | $152.50 | — |
| Rhode IslandRhode Island | $155.25 | — |
| South CarolinaSouth Carolina | $139.13 | — |
| TennesseeTennessee | $135.37 | — |
| Austin, TXTexas | $158.87 | — |
| Beaumont, TXTexas | $137.48 | — |
| Brazoria, TXTexas | $148.56 | — |
| Dallas, TXTexas | $149.68 | — |
| Fort Worth, TXTexas | $148.28 | — |
| Galveston, TXTexas | $149.09 | — |
| Houston, TXTexas | $151.83 | — |
| Rest of TexasTexas | $143.04 | — |
| UtahUtah | $141.70 | — |
| VirginiaVirginia | $147.02 | — |
| Virgin Islands, VIUnited States Virgin Islands | $152.50 | — |
| VermontVermont | $147.04 | — |
| Rest of WashingtonWashington | $157.51 | — |
| King County, WAWashington | $183.19 | — |
| WisconsinWisconsin | $141.37 | — |
| West VirginiaWest Virginia | $134.01 | — |
| WyomingWyoming | $149.67 | — |
77370 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.
$127.96
$187.91
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 | $158.21 | 1 |
| AL | $130.55 | 1 |
| AR | $127.96 | 1 |
| AZ | $145.73 | 1 |
| CA | $162.66–$213.16 | 29 |
| CO | $159.22 | 1 |
| CT | $163.26 | 1 |
| DC | $177.52 | 1 |
| DE | $148.71 | 1 |
| FL | $147.07–$164.62 | 3 |
| GA | $136.17–$154.31 | 2 |
| GU | $168.86 | 1 |
| HI | $168.86 | 1 |
| IA | $135.54 | 1 |
| ID | $136.65 | 1 |
| IL | $141.09–$158.78 | 4 |
| IN | $137.74 | 1 |
| KS | $134.47 | 1 |
| KY | $134.34 | 1 |
| LA | $133.98–$143.04 | 2 |
| MA | $157.69–$178.74 | 2 |
| MD | $152.31–$177.52 | 3 |
| ME | $137.40–$147.81 | 2 |
| MI | $138.92–$149.30 | 2 |
| MN | $151.68 | 1 |
| MO | $130.70–$143.98 | 3 |
| MS | $129.38 | 1 |
| MT | $150.96 | 1 |
| NC | $139.38 | 1 |
| ND | $148.00 | 1 |
| NE | $136.62 | 1 |
| NH | $156.33 | 1 |
| NJ | $164.89–$174.67 | 2 |
| NM | $139.86 | 1 |
| NV | $150.28 | 1 |
| NY | $142.19–$182.85 | 5 |
| OH | $138.31 | 1 |
| OK | $134.24 | 1 |
| OR | $148.90–$165.89 | 2 |
| PA | $138.73–$157.92 | 2 |
| PR | $152.50 | 1 |
| RI | $155.25 | 1 |
| SC | $139.13 | 1 |
| SD | $147.65 | 1 |
| TN | $135.37 | 1 |
| TX | $137.48–$158.87 | 8 |
| UT | $141.70 | 1 |
| VA | $147.02–$177.52 | 2 |
| VI | $152.50 | 1 |
| VT | $147.04 | 1 |
| WA | $157.51–$183.19 | 2 |
| WI | $141.37 | 1 |
| WV | $134.01 | 1 |
| WY | $149.67 | 1 |
How the 77370 rate is calculated
Each of 77370’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 · 77370
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense4.37
4.37 RVUs× 1.000 GPCI
Malpractice0.15
0.15 RVUs× 1.000 GPCI
Adjusted RVUs
4.5200
Conversion factor
$33.4009
Medicare rate
$150.97
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact South Dakota inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
9,087
- Code
- 77370
- Physician work
- 0.00
- Practice expense
- 4.37
- Malpractice
- 0.15
GPCI2026.csv
94
- Locality
- South Dakota
- Physician work
- 1.000
- Practice expense
- 1.000
- Malpractice
- 0.336
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.000 | 0.0000 |
| Practice expense | 4.37 | × 1.000 | 4.3700 |
| Malpractice | 0.15 | × 0.336 | 0.0504 |
| Total RVUs | 4.4204 | ||
| Conversion factor | × 33.4009 | ||
Office rate, South Dakota$147.65
Office: (0 × 1 + 4.37 × 1 + 0.15 × 0.336) × $33.4009 = $147.65
Payment rules and modifiers for 77370
The CMS indicators that decide how 77370 is paid alongside other services.
CMS payment indicators · 77370
Radiation physics consult, unusual treatment circumstances
| 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 | 3 | Technical component only. |
How 77370 has changed in South Dakota
77370 · Office / nonfacility
$147.65
Effective 2026-10-01
The base rate is $5.29 higher than on 2025-10-01, moving from $142.36 to $147.65 (3.7%).
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
$142.36changed to$147.65
- Conversion factor 32.3465 changed to 33.4009
- Practice expense RVU 4.34 changed to 4.37
- Malpractice RVU 0.16 changed to 0.15
- Malpractice GPCI 0.382 changed to 0.336
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$141.38changed to$142.36
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 4.19 changed to 4.34
- Malpractice RVU 0.15 changed to 0.16
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$139.07changed to$141.38
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$137.61changed to$139.07
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 4.01 changed to 4.19
- Malpractice RVU 0.14 changed to 0.15
- Malpractice GPCI 0.364 changed to 0.382
January 1, 2023
RVU23A
$131.21changed to$137.61
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 3.75 changed to 4.01
- Malpractice RVU 0.12 changed to 0.14
- Malpractice GPCI 0.347 changed to 0.364
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$127.89changed to$131.21
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 3.62 changed to 3.75
- Malpractice RVU 0.13 changed to 0.12
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$124.17changed to$127.89
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 3.40 changed to 3.62
- Malpractice RVU 0.11 changed to 0.13
- Malpractice GPCI 0.368 changed to 0.347
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$124.22changed to$124.17
- Conversion factor 36.0391 changed to 36.0896
- Malpractice RVU 0.12 changed to 0.11
- Malpractice GPCI 0.389 changed to 0.368
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$124.80changed to$124.22
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 3.42 changed to 3.40
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$121.57changed to$124.80
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 3.34 changed to 3.42
- Malpractice GPCI 0.395 changed to 0.389
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$120.59changed to$121.57
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 3.32 changed to 3.34
- Malpractice GPCI 0.400 changed to 0.395
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$116.64changed to$120.59
- Conversion factor 35.9335 changed to 35.8043
- Practice expense RVU 3.23 changed to 3.32
- Malpractice RVU 0.04 changed to 0.12
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$116.06changed to$116.64
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$113.80changed to$116.06
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 3.16 changed to 3.23
- Malpractice GPCI 0.416 changed to 0.400
Held through RVU15B.
January 1, 2014
RVU14A
$117.29changed to$113.80
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 3.43 changed to 3.16
- Malpractice GPCI 0.432 changed to 0.416
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $117.29
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $147.65 | Not available in this setting | RVU26D |
| 2026-07-01 | $147.65 | Not available in this setting | RVU26C |
| 2026-04-01 | $147.65 | Not available in this setting | RVU26B |
| 2026-01-01 | $147.65 | Not available in this setting | RVU26A |
| 2025-10-01 | $142.36 | Not available in this setting | RVU25D |
| 2025-07-01 | $142.36 | Not available in this setting | RVU25C |
| 2025-04-01 | $142.36 | Not available in this setting | RVU25B |
| 2025-01-01 | $142.36 | Not available in this setting | RVU25A |
| 2024-10-01 | $141.38 | Not available in this setting | RVU24D |
| 2024-07-01 | $141.38 | Not available in this setting | RVU24C |
| 2024-04-01 | $141.38 | Not available in this setting | RVU24B |
| 2024-03-09 | $141.38 | Not available in this setting | RVU24AR |
| 2024-01-01 | $139.07 | Not available in this setting | RVU24A |
| 2023-10-01 | $137.61 | Not available in this setting | RVU23D |
| 2023-07-01 | $137.61 | Not available in this setting | RVU23C |
| 2023-04-01 | $137.61 | Not available in this setting | RVU23B |
| 2023-01-01 | $137.61 | Not available in this setting | RVU23A |
| 2022-10-01 | $131.21 | Not available in this setting | RVU22D |
| 2022-07-01 | $131.21 | Not available in this setting | RVU22C |
| 2022-04-01 | $131.21 | Not available in this setting | RVU22B |
| 2022-01-01 | $131.21 | Not available in this setting | RVU22A |
| 2021-10-01 | $127.89 | Not available in this setting | RVU21D |
| 2021-07-01 | $127.89 | Not available in this setting | RVU21C |
| 2021-04-01 | $127.89 | Not available in this setting | RVU21B |
| 2021-01-01 | $127.89 | Not available in this setting | RVU21A |
| 2020-10-01 | $124.17 | Not available in this setting | RVU20D |
| 2020-07-01 | $124.17 | Not available in this setting | RVU20C |
| 2020-04-01 | $124.17 | Not available in this setting | RVU20B |
| 2020-01-01 | $124.17 | Not available in this setting | RVU20A |
| 2019-10-01 | $124.22 | Not available in this setting | RVU19D |
| 2019-07-01 | $124.22 | Not available in this setting | RVU19C |
| 2019-04-01 | $124.22 | Not available in this setting | RVU19B |
| 2019-01-01 | $124.22 | Not available in this setting | RVU19A |
| 2018-10-01 | $124.80 | Not available in this setting | RVU18D |
| 2018-07-01 | $124.80 | Not available in this setting | RVU18C |
| 2018-04-01 | $124.80 | Not available in this setting | RVU18B |
| 2018-01-01 | $124.80 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $121.57 | Not available in this setting | RVU17D |
| 2017-07-01 | $121.57 | Not available in this setting | RVU17C |
| 2017-04-01 | $121.57 | Not available in this setting | RVU17B |
| 2017-01-01 | $121.57 | Not available in this setting | RVU17A |
| 2016-10-01 | $120.59 | Not available in this setting | RVU16D |
| 2016-07-01 | $120.59 | Not available in this setting | RVU16C |
| 2016-04-01 | $120.59 | Not available in this setting | RVU16B |
| 2016-01-01 | $120.59 | Not available in this setting | RVU16A |
| 2015-10-01 | $116.64 | Not available in this setting | RVU15D |
| 2015-07-01 | $116.64 | Not available in this setting | RVU15C |
| 2015-04-01 | $116.06 | Not available in this setting | RVU15B |
| 2015-01-01 | $116.06 | Not available in this setting | RVU15A |
| 2014-10-01 | $113.80 | Not available in this setting | RVU14D |
| 2014-07-01 | $113.80 | Not available in this setting | RVU14C |
| 2014-04-01 | $113.80 | Not available in this setting | RVU14B |
| 2014-01-01 | $113.80 | Not available in this setting | RVU14A |
| 2013-10-01 | $117.29 | Not available in this setting | RVU13D |
| 2013-07-01 | $117.29 | Not available in this setting | RVU13C |
| 2013-04-01 | $117.29 | Not available in this setting | RVU13B |
| 2013-01-01 | $117.29 | Not available in this setting | RVU13AR |
Where the South Dakota rate applies
South Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in South Dakota. Some span more than one payment area; confirm with the service ZIP.
- Aberdeen
- Agar
- Agency Village
- Akaska
- Albee
- Alcester
- Alexandria
- Allen
77370 billing questions
How does 77370 differ from 77336?
Use 77370 for a physician-requested, case-specific physics analysis prompted by unusual treatment circumstances. Code 77336 represents ongoing physics review during a radiation treatment course.
Can routine dose calculation be reported as 77370?
No. A routine dose calculation is distinct from the special consultation reported with 77370; document the unusual circumstance and the additional physics work.
Does 77370 include the physician’s interpretation?
CMS identifies 77370 as technical-component-only. Interpretation is covered by a separate code.
What documentation supports 77370?
Keep the radiation oncologist’s request and the physicist’s report. The report should identify the unusual treatment issue, the calculations or measurements performed, and the resulting findings.
Is 77370 reported for every complex radiation plan?
No. Complexity alone is not the service; the record should support a distinct, physician-requested physics consultation beyond routine planning or review.
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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