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CPT code 77373: SBRT delivery, per fraction, up to five2026 Medicare rate & RVUs in Washington, DC area

Reports image-guided stereotactic radiation delivery to one or more body lesions per fraction during a course of no more than five fractions.

CMS RVU26DEffective Oct 1, 2026One payment locality45.4K Medicare services in 2024

In Washington, DC area, Medicare pays $1,152.30 for 77373 in the office.

$1,152.30Office (non-facility)
Not available in this settingHospital or facility
+17.7%vs the national office rate ($978.65)

Check a contract rate as a % of Medicare · 77373 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 77373 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 77373 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 77373 covers

Stereotactic body radiation therapy (SBRT) delivers precisely targeted, high-dose radiation to tumors outside the brain, commonly in the lung, liver, or spine. Radiation oncologists prescribe and oversee treatment, while radiation therapists deliver each fraction using specialized equipment and image guidance to position and verify the target. The service is performed in a radiation oncology treatment setting.

Report 77373 once for each treatment fraction, whether one or multiple lesions are treated in that fraction; the code describes a course of no more than five fractions. The treatment record should support the treated target or targets, fraction date, image-guided setup, and completed delivery. Image guidance is included in the service. CMS treats this as a technical-component-only code; a separate code covers interpretation. The CMS fee schedule assigns no physician-work value to this code.

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 77373

Across 109 of 109 payment localities, the office rate for 77373 runs from $837.78 in Arkansas to $1,403.64 in San Benito County, CA. Washington, DC area pays $1,152.30. The RVUs are the same everywhere; the geographic indexes change the dollars.

77373 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$1,152.30
  2. Los Angeles, CA · California$1,153.40+$1.10
  3. Miami, FL · Florida$1,031.20−$121.10
  4. Chicago, IL · Illinois$994.31−$157.99
  5. Manhattan, NY · New York$1,140.73−$11.57
  6. Alaska · Alaska$1,037.97−$114.33
  7. Alabama · Alabama$853.74−$298.56

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

Every other payment area

77373 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas$837.78—
ArizonaArizona$947.36—
Bakersfield, CACalifornia$1,068.53—
Chico, CACalifornia$1,067.92—
El Centro, CACalifornia$1,067.96—
Fresno, CACalifornia$1,067.92—
Hanford, CACalifornia$1,067.92—
Madera, CACalifornia$1,067.92—

77373 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.

$837.78

$1,235.78

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
77373 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,037.971
AL$853.741
AR$837.781
AZ$947.361
CA$1,067.92–$1,403.6429
CO$1,038.921
CT$1,055.111
DC$1,152.301
DE$966.161
FL$940.15–$1,031.203
GA$875.46–$995.852
GU$1,108.061
HI$1,108.061
IA$891.141
ID$896.621
IL$898.93–$1,011.294
IN$903.521
KS$881.361
KY$870.231
LA$866.71–$922.532
MA$1,028.38–$1,165.972
MD$989.61–$1,152.303
ME$897.87–$966.832
MI$895.31–$950.412
MN$1,000.911
MO$844.53–$932.093
MS$841.601
MT$978.631
NC$910.621
ND$973.691
NE$898.741
NH$1,017.381
NJ$1,068.72–$1,134.462
NM$899.791
NV$978.221
NY$927.65–$1,169.195
OH$894.301
OK$872.961
OR$972.29–$1,084.212
PA$898.62–$1,020.042
PR$989.191
RI$1,009.761
SC$903.651
SD$973.101
TN$886.481
TX$890.73–$1,033.978
UT$919.581
VA$959.70–$1,152.302
VI$989.191
VT$964.821
WA$1,028.08–$1,197.382
WI$932.121
WV$855.141
WY$976.481

See 77373 in every payment locality

How the 77373 rate is calculated

Each of 77373’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 · 77373

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.00

0.00 RVUs× 1.000 GPCI

Practice expense29.05

29.05 RVUs× 1.000 GPCI

Malpractice0.25

0.25 RVUs× 1.000 GPCI

Adjusted RVUs

29.3000

Conversion factor

$33.4009

Medicare rate

$978.65

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

9,090

Code
77373
Physician work
0.00
Practice expense
29.05
Malpractice
0.25

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Office calculation for 77373 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work0.00× 1.0540.0000
Practice expense29.05× 1.17834.2209
Malpractice0.25× 1.1130.2782
Total RVUs34.4992
Conversion factor× 33.4009

Office rate, Washington, DC area$1152.30

Office: (0 × 1.054 + 29.05 × 1.178 + 0.25 × 1.113) × $33.4009 = $1152.30

Open 77373 in the RVU calculator

Payment rules and modifiers for 77373

The CMS indicators that decide how 77373 is paid alongside other services.

CMS payment indicators · 77373

SBRT delivery, per fraction, up to five

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 77373

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

Codes related to 77373
CodeHow it relatesOffice range, Washington, DC area
Often billed with
77435SBRT management, per treatment coursePhysician treatment management reported for the same SBRT course.$705.53
Used instead
77371SRS delivery, multisource cobalt-60Stereotactic radiosurgery delivery for intracranial targets rather than body targets.No office rate
77372Stereotactic radiosurgery, linear accelerator, one sessionLinear-accelerator-based stereotactic radiosurgery delivery for intracranial targets.$1,099.67

How 77373 has changed in Washington, DC area

77373 · Office / nonfacility

$1152.30

Effective 2026-10-01

The base rate is $20.86 higher than on 2025-10-01, moving from $1131.44 to $1152.30 (1.8%).

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

    $1131.44changed to$1152.30

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 29.08 changed to 29.05
    • Malpractice RVU 0.27 changed to 0.25
    • 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

    $1184.21changed to$1131.44

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 29.60 changed to 29.08
    • Malpractice RVU 0.25 changed to 0.27

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1164.88changed to$1184.21

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1237.18changed to$1164.88

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 29.84 changed to 29.60
    • Malpractice RVU 0.23 changed to 0.25
    • 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

    $1285.76changed to$1237.18

    • Conversion factor 34.6062 changed to 33.8872
    • Malpractice RVU 0.21 changed to 0.23
    • 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

    $1449.09changed to$1285.76

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 33.38 changed to 29.84

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1503.01changed to$1449.09

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 33.91 changed to 33.38
    • Malpractice RVU 0.19 changed to 0.21
    • 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

    $1590.27changed to$1503.01

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 36.41 changed to 33.91
    • Malpractice RVU 0.20 changed to 0.19
    • 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

    $1714.76changed to$1590.27

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 39.32 changed to 36.41

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $1671.93changed to$1714.76

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 38.45 changed to 39.32
    • 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

    $1660.73changed to$1671.93

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 38.28 changed to 38.45
    • 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

    $1634.76changed to$1660.73

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 37.68 changed to 38.28
    • Malpractice RVU 0.07 changed to 0.20

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1626.62changed to$1634.76

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $1504.49changed to$1626.62

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 34.87 changed to 37.68
    • 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

    $1519.76changed to$1504.49

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 37.22 changed to 34.87
    • 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: $1519.76

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,152.30Not available in this settingRVU26D
2026-07-01$1,152.30Not available in this settingRVU26C
2026-04-01$1,152.30Not available in this settingRVU26B
2026-01-01$1,152.30Not available in this settingRVU26A
2025-10-01$1,131.44Not available in this settingRVU25D
2025-07-01$1,131.44Not available in this settingRVU25C
2025-04-01$1,131.44Not available in this settingRVU25B
2025-01-01$1,131.44Not available in this settingRVU25A
2024-10-01$1,184.21Not available in this settingRVU24D
2024-07-01$1,184.21Not available in this settingRVU24C
2024-04-01$1,184.21Not available in this settingRVU24B
2024-03-09$1,184.21Not available in this settingRVU24AR
2024-01-01$1,164.88Not available in this settingRVU24A
2023-10-01$1,237.18Not available in this settingRVU23D
2023-07-01$1,237.18Not available in this settingRVU23C
2023-04-01$1,237.18Not available in this settingRVU23B
2023-01-01$1,237.18Not available in this settingRVU23A
2022-10-01$1,285.76Not available in this settingRVU22D
2022-07-01$1,285.76Not available in this settingRVU22C
2022-04-01$1,285.76Not available in this settingRVU22B
2022-01-01$1,285.76Not available in this settingRVU22A
2021-10-01$1,449.09Not available in this settingRVU21D
2021-07-01$1,449.09Not available in this settingRVU21C
2021-04-01$1,449.09Not available in this settingRVU21B
2021-01-01$1,449.09Not available in this settingRVU21A
2020-10-01$1,503.01Not available in this settingRVU20D
2020-07-01$1,503.01Not available in this settingRVU20C
2020-04-01$1,503.01Not available in this settingRVU20B
2020-01-01$1,503.01Not available in this settingRVU20A
2019-10-01$1,590.27Not available in this settingRVU19D
2019-07-01$1,590.27Not available in this settingRVU19C
2019-04-01$1,590.27Not available in this settingRVU19B
2019-01-01$1,590.27Not available in this settingRVU19A
2018-10-01$1,714.76Not available in this settingRVU18D
2018-07-01$1,714.76Not available in this settingRVU18C
2018-04-01$1,714.76Not available in this settingRVU18B
2018-01-01$1,714.76Not available in this settingRVU18AR1
2017-10-01$1,671.93Not available in this settingRVU17D
2017-07-01$1,671.93Not available in this settingRVU17C
2017-04-01$1,671.93Not available in this settingRVU17B
2017-01-01$1,671.93Not available in this settingRVU17A
2016-10-01$1,660.73Not available in this settingRVU16D
2016-07-01$1,660.73Not available in this settingRVU16C
2016-04-01$1,660.73Not available in this settingRVU16B
2016-01-01$1,660.73Not available in this settingRVU16A
2015-10-01$1,634.76Not available in this settingRVU15D
2015-07-01$1,634.76Not available in this settingRVU15C
2015-04-01$1,626.62Not available in this settingRVU15B
2015-01-01$1,626.62Not available in this settingRVU15A
2014-10-01$1,504.49Not available in this settingRVU14D
2014-07-01$1,504.49Not available in this settingRVU14C
2014-04-01$1,504.49Not available in this settingRVU14B
2014-01-01$1,504.49Not available in this settingRVU14A
2013-10-01$1,519.76Not available in this settingRVU13D
2013-07-01$1,519.76Not available in this settingRVU13C
2013-04-01$1,519.76Not available in this settingRVU13B
2013-01-01$1,519.76Not available in this settingRVU13AR

Price 77373 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

77373 billing questions

Is 77373 reported per lesion or per fraction?

Report it per fraction, not once for each lesion. The code covers treatment of one or more lesions in that fraction.

What documentation supports a 77373 claim?

The treatment record should identify the target or targets, the date and fraction delivered, image-guided setup, and completion of treatment delivery.

Can image guidance be billed separately with 77373?

Image guidance is included in 77373, so it should not be separately reported for the same SBRT delivery.

Does 77373 include the physician's interpretation?

No. CMS classifies 77373 as technical-component-only; a separate code covers interpretation.

How does 77373 differ from 77371 and 77372?

77373 is for stereotactic radiation treatment of body targets. Codes 77371 and 77372 describe stereotactic radiosurgery delivery for intracranial targets.

Is 77373 the same service as SBRT treatment management?

No. 77373 reports treatment delivery by fraction; 77435 reports physician treatment management for the SBRT course.

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 77373PPRRVU2026_Oct_nonQPP.csv, line 9,090 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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