FeeBase
Log inGet started
Menu

CPT code 77370: Radiation physics consult, unusual treatment circumstances2026 Medicare rate & RVUs in Washington, DC area

A medical physicist performs a physician-requested, case-specific analysis or measurement for unusual radiation treatment circumstances beyond routine planning and review.

CMS RVU26DEffective Oct 1, 2026One payment locality12K Medicare services in 2024

In Washington, DC area, Medicare pays $177.52 for 77370 in the office.

$177.52Office (non-facility)
Not available in this settingHospital or facility
+17.6%vs the national office rate ($150.97)

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.

We’ll open 77370 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 77370 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

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 Washington, DC area 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. Washington, DC area pays $177.52. The RVUs are the same everywhere; the geographic indexes change the dollars.

77370 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$177.52
  2. Los Angeles, CA · California$176.00−$1.52
  3. Miami, FL · Florida$164.62−$12.90
  4. Chicago, IL · Illinois$158.19−$19.33
  5. Manhattan, NY · New York$177.55+$0.03
  6. Alaska · Alaska$158.21−$19.31
  7. Alabama · Alabama$130.55−$46.97

Other areas in District of Columbia first, then benchmark localities. Bars start at $0.

Every other payment area

77370 in every other Medicare payment locality
Payment localityOfficeFacility
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—

77370 rates by state

Office rate range in each state. Select a state to see its payment localities.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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
77370 office rate range by state
State / territoryOffice rate rangeLocalities
AK$158.211
AL$130.551
AR$127.961
AZ$145.731
CA$162.66–$213.1629
CO$159.221
CT$163.261
DC$177.521
DE$148.711
FL$147.07–$164.623
GA$136.17–$154.312
GU$168.861
HI$168.861
IA$135.541
ID$136.651
IL$141.09–$158.784
IN$137.741
KS$134.471
KY$134.341
LA$133.98–$143.042
MA$157.69–$178.742
MD$152.31–$177.523
ME$137.40–$147.812
MI$138.92–$149.302
MN$151.681
MO$130.70–$143.983
MS$129.381
MT$150.961
NC$139.381
ND$148.001
NE$136.621
NH$156.331
NJ$164.89–$174.672
NM$139.861
NV$150.281
NY$142.19–$182.855
OH$138.311
OK$134.241
OR$148.90–$165.892
PA$138.73–$157.922
PR$152.501
RI$155.251
SC$139.131
SD$147.651
TN$135.371
TX$137.48–$158.878
UT$141.701
VA$147.02–$177.522
VI$152.501
VT$147.041
WA$157.51–$183.192
WI$141.371
WV$134.011
WY$149.671

See 77370 in every payment locality

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

Office or facility?

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 Washington, DC area 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

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Office calculation for 77370 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work0.00× 1.0540.0000
Practice expense4.37× 1.1785.1479
Malpractice0.15× 1.1130.1669
Total RVUs5.3148
Conversion factor× 33.4009

Office rate, Washington, DC area$177.52

Office: (0 × 1.054 + 4.37 × 1.178 + 0.15 × 1.113) × $33.4009 = $177.52

Open 77370 in the RVU calculator

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

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical3Technical component only.

Codes related to 77370

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 77370
CodeHow it relatesOffice range, Washington, DC area
Used instead
77336Physics review, per week of therapyUsed for ongoing physics review during treatment rather than a special case-specific consultation.$108.44
77300Dosimetry calculation, basic, per calculationReports a dose calculation when routine calculation work, not a special consultation, is performed.$76.51
Often billed with
77301IMRT planning, dose optimization and volume analysisIMRT planning may accompany a separately documented special physics consultation.$2,275.45

How 77370 has changed in Washington, DC area

77370 · Office / nonfacility

$177.52

Effective 2026-10-01

The base rate is $4.14 higher than on 2025-10-01, moving from $173.38 to $177.52 (2.4%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

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

  1. January 1, 2026

    RVU26A

    $173.38changed to$177.52

    • 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
    • Work GPCI 1.057 changed to 1.054
    • Practice expense GPCI 1.192 changed to 1.178
    • Malpractice GPCI 1.168 changed to 1.113

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $172.09changed to$173.38

    • 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.

  3. March 9, 2024

    RVU24AR

    $169.28changed to$172.09

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $170.81changed to$169.28

    • 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
    • Work GPCI 1.056 changed to 1.057
    • Practice expense GPCI 1.214 changed to 1.192
    • Malpractice GPCI 1.231 changed to 1.168

  5. January 1, 2023

    RVU23A

    $165.77changed to$170.81

    • 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
    • Work GPCI 1.054 changed to 1.056
    • Practice expense GPCI 1.236 changed to 1.214
    • Malpractice GPCI 1.294 changed to 1.231

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $161.99changed to$165.77

    • 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.

  7. January 1, 2021

    RVU21A

    $154.89changed to$161.99

    • 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
    • Work GPCI 1.049 changed to 1.054
    • Practice expense GPCI 1.221 changed to 1.236
    • Malpractice GPCI 1.277 changed to 1.294

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $153.11changed to$154.89

    • Conversion factor 36.0391 changed to 36.0896
    • Malpractice RVU 0.12 changed to 0.11
    • Work GPCI 1.045 changed to 1.049
    • Practice expense GPCI 1.205 changed to 1.221
    • Malpractice GPCI 1.261 changed to 1.277

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $153.81changed to$153.11

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 3.42 changed to 3.40

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $149.91changed to$153.81

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 3.34 changed to 3.42
    • Work GPCI 1.048 changed to 1.045
    • Malpractice GPCI 1.271 changed to 1.261

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $148.74changed to$149.91

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 3.32 changed to 3.34
    • Work GPCI 1.051 changed to 1.048
    • Malpractice GPCI 1.280 changed to 1.271

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $141.70changed to$148.74

    • 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.

  13. July 1, 2015

    RVU15C

    $140.99changed to$141.70

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $137.79changed to$140.99

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 3.16 changed to 3.23
    • Work GPCI 1.050 changed to 1.051
    • Practice expense GPCI 1.202 changed to 1.205
    • Malpractice GPCI 1.205 changed to 1.280

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $141.34changed to$137.79

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 3.43 changed to 3.16
    • Work GPCI 1.049 changed to 1.050
    • Practice expense GPCI 1.198 changed to 1.202
    • Malpractice GPCI 1.130 changed to 1.205

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $141.34

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$177.52Not available in this settingRVU26D
2026-07-01$177.52Not available in this settingRVU26C
2026-04-01$177.52Not available in this settingRVU26B
2026-01-01$177.52Not available in this settingRVU26A
2025-10-01$173.38Not available in this settingRVU25D
2025-07-01$173.38Not available in this settingRVU25C
2025-04-01$173.38Not available in this settingRVU25B
2025-01-01$173.38Not available in this settingRVU25A
2024-10-01$172.09Not available in this settingRVU24D
2024-07-01$172.09Not available in this settingRVU24C
2024-04-01$172.09Not available in this settingRVU24B
2024-03-09$172.09Not available in this settingRVU24AR
2024-01-01$169.28Not available in this settingRVU24A
2023-10-01$170.81Not available in this settingRVU23D
2023-07-01$170.81Not available in this settingRVU23C
2023-04-01$170.81Not available in this settingRVU23B
2023-01-01$170.81Not available in this settingRVU23A
2022-10-01$165.77Not available in this settingRVU22D
2022-07-01$165.77Not available in this settingRVU22C
2022-04-01$165.77Not available in this settingRVU22B
2022-01-01$165.77Not available in this settingRVU22A
2021-10-01$161.99Not available in this settingRVU21D
2021-07-01$161.99Not available in this settingRVU21C
2021-04-01$161.99Not available in this settingRVU21B
2021-01-01$161.99Not available in this settingRVU21A
2020-10-01$154.89Not available in this settingRVU20D
2020-07-01$154.89Not available in this settingRVU20C
2020-04-01$154.89Not available in this settingRVU20B
2020-01-01$154.89Not available in this settingRVU20A
2019-10-01$153.11Not available in this settingRVU19D
2019-07-01$153.11Not available in this settingRVU19C
2019-04-01$153.11Not available in this settingRVU19B
2019-01-01$153.11Not available in this settingRVU19A
2018-10-01$153.81Not available in this settingRVU18D
2018-07-01$153.81Not available in this settingRVU18C
2018-04-01$153.81Not available in this settingRVU18B
2018-01-01$153.81Not available in this settingRVU18AR1
2017-10-01$149.91Not available in this settingRVU17D
2017-07-01$149.91Not available in this settingRVU17C
2017-04-01$149.91Not available in this settingRVU17B
2017-01-01$149.91Not available in this settingRVU17A
2016-10-01$148.74Not available in this settingRVU16D
2016-07-01$148.74Not available in this settingRVU16C
2016-04-01$148.74Not available in this settingRVU16B
2016-01-01$148.74Not available in this settingRVU16A
2015-10-01$141.70Not available in this settingRVU15D
2015-07-01$141.70Not available in this settingRVU15C
2015-04-01$140.99Not available in this settingRVU15B
2015-01-01$140.99Not available in this settingRVU15A
2014-10-01$137.79Not available in this settingRVU14D
2014-07-01$137.79Not available in this settingRVU14C
2014-04-01$137.79Not available in this settingRVU14B
2014-01-01$137.79Not available in this settingRVU14A
2013-10-01$141.34Not available in this settingRVU13D
2013-07-01$141.34Not available in this settingRVU13C
2013-04-01$141.34Not available in this settingRVU13B
2013-01-01$141.34Not available in this settingRVU13AR

Price 77370 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

  • Washington

Browse all communities in District of Columbia

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
RVUs for 77370PPRRVU2026_Oct_nonQPP.csv, line 9,087 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

Did this answer your question about what 77370 pays in Washington, DC area?

Tell us what you were actually trying to work out. We’ll answer you directly, or build the page that does.

Fee sheets

Put 77370 and the rest of your codes on one sheet

Your codes at your locality, with payer contracts beside Medicare.

Build my fee sheet