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CPT code 77301: IMRT planning, dose optimization and volume analysis2026 Medicare rate & RVUs in Delaware

Reports computerized IMRT planning that optimizes radiation dose across a target while evaluating dose exposure to nearby critical structures.

CMS RVU26DEffective Oct 1, 2026One payment locality194K Medicare services in 2024

In Delaware, Medicare pays $1,939.12 for 77301 in the office.

$1,939.12Office (non-facility)
Not available in this settingHospital or facility
−1.1%vs the national office rate ($1,960.30)

Check a contract rate as a % of Medicare · 77301 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 77301 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Delaware
  2. What 77301 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 77301 covers

This service covers development of a computerized intensity-modulated radiation therapy plan. The team shapes and optimizes radiation fields to deliver the prescribed dose to the target while assessing exposure to organs at risk, often using dose-volume analysis. A radiation oncologist directs and approves the plan, with work commonly performed by medical physicists and dosimetrists in a radiation oncology department or freestanding center. It is planning work, not delivery of the radiation treatment.

Report the code when the record supports an IMRT-specific optimized plan, including the target and critical-structure evaluation, rather than a conventional teletherapy isodose plan. Documentation should identify the treatment plan, prescription, dose evaluation, and physician approval. CMS recognizes professional and technical components: modifier 26 identifies the professional interpretation, modifier TC the equipment and staff, and no modifier represents the global service.

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 Delaware compares for 77301

Across 109 of 109 payment localities, the office rate for 77301 runs from $1,712.54 in Arkansas to $2,719.18 in San Benito County, CA. Delaware pays $1,939.12. The RVUs are the same everywhere; the geographic indexes change the dollars.

77301 in Delaware vs other payment areas
  1. Delaware · this page$1,939.12
  2. Los Angeles, CA · California$2,269.95+$330.83
  3. Washington, DC area · District of Columbia$2,275.45+$336.33
  4. Miami, FL · Florida$2,064.79+$125.67
  5. Chicago, IL · Illinois$2,000.78+$61.66
  6. Manhattan, NY · New York$2,262.28+$323.16
  7. Alaska · Alaska$2,188.88+$249.76

Other areas in Delaware first, then benchmark localities. Bars start at $0.

Every other payment area

77301 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$1,740.56—
ArkansasArkansas$1,712.54—
ArizonaArizona$1,904.95—
Bakersfield, CACalifornia$2,117.07—
Chico, CACalifornia$2,114.84—
El Centro, CACalifornia$2,114.96—
Fresno, CACalifornia$2,114.84—
Hanford, CACalifornia$2,114.84—

77301 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.

$1,712.54

$2,417.01

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

View every state and territory as a table
77301 office rate range by state
State / territoryOffice rate rangeLocalities
AK$2,188.881
AL$1,740.561
AR$1,712.541
AZ$1,904.951
CA$2,114.84–$2,719.1829
CO$2,065.611
CT$2,099.521
DC$2,275.451
DE$1,939.121
FL$1,898.28–$2,064.793
GA$1,783.70–$1,992.612
GU$2,180.171
HI$2,180.171
IA$1,803.681
ID$1,813.841
IL$1,827.59–$2,025.444
IN$1,825.881
KS$1,787.741
KY$1,772.191
LA$1,766.49–$1,864.552
MA$2,048.58–$2,293.682
MD$1,981.10–$2,275.453
ME$1,817.32–$1,936.582
MI$1,817.44–$1,917.652
MN$1,992.461
MO$1,728.30–$1,879.863
MS$1,721.131
MT$1,960.251
NC$1,839.521
ND$1,946.411
NE$1,816.651
NH$2,026.121
NJ$2,127.23–$2,246.562
NM$1,825.831
NV$1,958.071
NY$1,869.52–$2,313.895
OH$1,814.611
OK$1,775.681
OR$1,946.65–$2,144.592
PA$1,821.52–$2,038.242
PR$1,978.391
RI$2,018.051
SC$1,829.361
SD$1,944.771
TN$1,796.891
TX$1,807.73–$2,055.408
UT$1,857.311
VA$1,924.92–$2,275.452
VI$1,978.391
VT$1,931.981
WA$2,046.96–$2,349.652
WI$1,873.701
WV$1,750.721
WY$1,954.221

See 77301 in every payment locality

How the 77301 rate is calculated

Each of 77301’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 · 77301

RVUs × geographic indexes × conversion factor

Office or facility?

Work7.79

7.79 RVUs× 1.000 GPCI

Practice expense50.20

50.20 RVUs× 1.000 GPCI

Malpractice0.70

0.70 RVUs× 1.000 GPCI

Adjusted RVUs

58.6900

Conversion factor

$33.4009

Medicare rate

$1,960.30

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Delaware inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

9,050

Code
77301
Physician work
7.79
Practice expense
50.20
Malpractice
0.70

GPCI2026.csv

40

Locality
Delaware
Physician work
1.005
Practice expense
0.988
Malpractice
0.899
Office calculation for 77301 in Delaware
ComponentRVULocality factorAdjusted
Physician work7.79× 1.0057.8289
Practice expense50.20× 0.98849.5976
Malpractice0.70× 0.8990.6293
Total RVUs58.0558
Conversion factor× 33.4009

Office rate, Delaware$1939.12

Office: (7.79 × 1.005 + 50.2 × 0.988 + 0.7 × 0.899) × $33.4009 = $1939.12

Open 77301 in the RVU calculator

Payment rules and modifiers for 77301

The CMS indicators that decide how 77301 is paid alongside other services.

CMS payment indicators · 77301

IMRT planning, dose optimization and volume analysis

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/technical1Diagnostic test with separate professional (26) and technical (TC) components.

What modifiers do to the payment

Modifier 26 · payment effect

With and without the modifier

77301 without 26 · national office

$1,960.30

IMRT planning, dose optimization and volume analysis

77301-26 · Professional component

$419.18

Pays only the interpretation and report.

When to use modifier 26

Codes related to 77301

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

Codes related to 77301
CodeHow it relatesOffice range, Delaware
Add-on codes
77338MLC design, per IMRT planIMRT multileaf collimator device design is an add-on reported with this planning service.$470.89
Used instead
77306Radiation plan, simple teletherapy planSimple conventional teletherapy isodose planning, rather than an optimized IMRT plan.$149.04
77307Isodose planning, complex teletherapy planComplex conventional teletherapy isodose planning, rather than an optimized IMRT plan.$287.90

How 77301 has changed in Delaware

77301 · Office / nonfacility

$1939.12

Effective 2026-10-01

The base rate is $152.26 higher than on 2025-10-01, moving from $1786.86 to $1939.12 (8.5%).

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

    $1786.86changed to$1939.12

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 7.99 changed to 7.79
    • Practice expense RVU 46.89 changed to 50.20
    • Work GPCI 1.009 changed to 1.005
    • Practice expense GPCI 0.992 changed to 0.988
    • Malpractice GPCI 0.949 changed to 0.899

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1831.59changed to$1786.86

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 46.68 changed to 46.89
    • Malpractice RVU 0.69 changed to 0.70

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1801.69changed to$1831.59

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1873.28changed to$1801.69

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 46.30 changed to 46.68
    • Malpractice RVU 0.65 changed to 0.69
    • Work GPCI 1.007 changed to 1.009
    • Practice expense GPCI 1.007 changed to 0.992
    • Malpractice GPCI 0.938 changed to 0.949

  5. January 1, 2023

    RVU23A

    $1898.22changed to$1873.28

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 45.27 changed to 46.30
    • Malpractice RVU 0.60 changed to 0.65
    • Work GPCI 1.005 changed to 1.007
    • Practice expense GPCI 1.022 changed to 1.007
    • Malpractice GPCI 0.927 changed to 0.938

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $1971.15changed to$1898.22

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 46.91 changed to 45.27
    • Malpractice RVU 0.56 changed to 0.60

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1985.85changed to$1971.15

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 45.46 changed to 46.91
    • Work GPCI 1.006 changed to 1.005
    • Practice expense GPCI 1.021 changed to 1.022
    • Malpractice GPCI 1.023 changed to 0.927

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $2020.28changed to$1985.85

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 46.48 changed to 45.46
    • Malpractice RVU 0.58 changed to 0.56
    • Work GPCI 1.007 changed to 1.006
    • Practice expense GPCI 1.019 changed to 1.021
    • Malpractice GPCI 1.119 changed to 1.023

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $2070.53changed to$2020.28

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 47.91 changed to 46.48

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $2036.69changed to$2070.53

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 46.87 changed to 47.91
    • Work GPCI 1.010 changed to 1.007
    • Practice expense GPCI 1.025 changed to 1.019
    • Malpractice GPCI 1.101 changed to 1.119

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $2031.85changed to$2036.69

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 46.58 changed to 46.87
    • Malpractice RVU 0.59 changed to 0.58
    • Work GPCI 1.012 changed to 1.010
    • Practice expense GPCI 1.031 changed to 1.025
    • Malpractice GPCI 1.083 changed to 1.101

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $2007.05changed to$2031.85

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 45.66 changed to 46.58
    • Malpractice RVU 0.64 changed to 0.59

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1997.06changed to$2007.05

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $2023.46changed to$1997.06

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 46.12 changed to 45.66
    • Malpractice RVU 0.60 changed to 0.64
    • Practice expense GPCI 1.038 changed to 1.031
    • Malpractice GPCI 0.878 changed to 1.083

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $2061.25changed to$2023.46

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 49.88 changed to 46.12
    • Malpractice RVU 0.63 changed to 0.60
    • Practice expense GPCI 1.044 changed to 1.038
    • Malpractice GPCI 0.672 changed to 0.878

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $2061.25

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,939.12Not available in this settingRVU26D
2026-07-01$1,939.12Not available in this settingRVU26C
2026-04-01$1,939.12Not available in this settingRVU26B
2026-01-01$1,939.12Not available in this settingRVU26A
2025-10-01$1,786.86Not available in this settingRVU25D
2025-07-01$1,786.86Not available in this settingRVU25C
2025-04-01$1,786.86Not available in this settingRVU25B
2025-01-01$1,786.86Not available in this settingRVU25A
2024-10-01$1,831.59Not available in this settingRVU24D
2024-07-01$1,831.59Not available in this settingRVU24C
2024-04-01$1,831.59Not available in this settingRVU24B
2024-03-09$1,831.59Not available in this settingRVU24AR
2024-01-01$1,801.69Not available in this settingRVU24A
2023-10-01$1,873.28Not available in this settingRVU23D
2023-07-01$1,873.28Not available in this settingRVU23C
2023-04-01$1,873.28Not available in this settingRVU23B
2023-01-01$1,873.28Not available in this settingRVU23A
2022-10-01$1,898.22Not available in this settingRVU22D
2022-07-01$1,898.22Not available in this settingRVU22C
2022-04-01$1,898.22Not available in this settingRVU22B
2022-01-01$1,898.22Not available in this settingRVU22A
2021-10-01$1,971.15Not available in this settingRVU21D
2021-07-01$1,971.15Not available in this settingRVU21C
2021-04-01$1,971.15Not available in this settingRVU21B
2021-01-01$1,971.15Not available in this settingRVU21A
2020-10-01$1,985.85Not available in this settingRVU20D
2020-07-01$1,985.85Not available in this settingRVU20C
2020-04-01$1,985.85Not available in this settingRVU20B
2020-01-01$1,985.85Not available in this settingRVU20A
2019-10-01$2,020.28Not available in this settingRVU19D
2019-07-01$2,020.28Not available in this settingRVU19C
2019-04-01$2,020.28Not available in this settingRVU19B
2019-01-01$2,020.28Not available in this settingRVU19A
2018-10-01$2,070.53Not available in this settingRVU18D
2018-07-01$2,070.53Not available in this settingRVU18C
2018-04-01$2,070.53Not available in this settingRVU18B
2018-01-01$2,070.53Not available in this settingRVU18AR1
2017-10-01$2,036.69Not available in this settingRVU17D
2017-07-01$2,036.69Not available in this settingRVU17C
2017-04-01$2,036.69Not available in this settingRVU17B
2017-01-01$2,036.69Not available in this settingRVU17A
2016-10-01$2,031.85Not available in this settingRVU16D
2016-07-01$2,031.85Not available in this settingRVU16C
2016-04-01$2,031.85Not available in this settingRVU16B
2016-01-01$2,031.85Not available in this settingRVU16A
2015-10-01$2,007.05Not available in this settingRVU15D
2015-07-01$2,007.05Not available in this settingRVU15C
2015-04-01$1,997.06Not available in this settingRVU15B
2015-01-01$1,997.06Not available in this settingRVU15A
2014-10-01$2,023.46Not available in this settingRVU14D
2014-07-01$2,023.46Not available in this settingRVU14C
2014-04-01$2,023.46Not available in this settingRVU14B
2014-01-01$2,023.46Not available in this settingRVU14A
2013-10-01$2,061.25Not available in this settingRVU13D
2013-07-01$2,061.25Not available in this settingRVU13C
2013-04-01$2,061.25Not available in this settingRVU13B
2013-01-01$2,061.25Not available in this settingRVU13AR

Price 77301 for an earlier date of service

Where the Delaware rate applies

Delaware is a Medicare payment area, not a city. Our Census mapping connects it to 79 cities and communities in Delaware. Some span more than one payment area; confirm with the service ZIP.

  • Arden
  • Ardencroft
  • Ardentown
  • Bear
  • Bellefonte
  • Bethany Beach
  • Bethel
  • Blades

Browse all communities in Delaware

77301 billing questions

When should 77301 be selected instead of 77306 or 77307?

Use 77301 for an IMRT-specific optimized plan with dose-volume evaluation. Codes 77306 and 77307 describe simple or complex conventional teletherapy isodose planning, not IMRT planning.

Does 77301 report radiation treatment delivery?

No. It reports development of the IMRT plan; radiation delivery is a separate service.

How are the professional and technical portions billed?

Modifier 26 identifies the professional interpretation, while modifier TC identifies the technical portion involving equipment and staff. Billing without either modifier represents the global service.

What documentation supports reporting 77301?

Keep the IMRT plan and records supporting its optimization, target and critical-structure dose evaluation, prescribed dose, and physician approval.

How does 77338 relate to 77301?

Code 77338 reports design of an IMRT multileaf collimator device and is an add-on to 77301 when that device-design service is performed.

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 77301PPRRVU2026_Oct_nonQPP.csv, line 9,050 (RVU26D)
Geographic factors for DelawareGPCI2026.csv, line 40 (RVU26D)

Open CMS sourceHow we calculate rates

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