CPT code 96366: IV infusion add-on hour, therapeutic or diagnostic, each additional hour2026 Medicare rate & RVUs in North Carolina

Report each qualifying additional hour of a therapeutic, prophylactic, or diagnostic IV drug infusion after an initial or sequential infusion's first hour.

CMS RVU26DEffective Oct 1, 2026One payment locality635.7K Medicare services in 2024

In North Carolina, Medicare pays $20.25 for 96366 in the office.

$20.25Office (non-facility)
Not available in this settingHospital or facility
−5.3%vs the national office rate ($21.38)

Check a contract rate as a % of Medicare · 96366 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 96366 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in North Carolina
  2. What 96366 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 96366 covers

This code captures continued IV administration of a therapeutic, prophylactic, or diagnostic drug after the infusion's first hour. Examples include standard infusions of IV antibiotics, iron, and immune globulin. In a physician office or infusion suite, an infusion nurse or other clinical staff typically starts, monitors, and stops the infusion under physician supervision. The substance administered and the service's complexity determine whether this infusion family is appropriate.

Report 96366 with 96365 when an initial drug infusion lasts at least 91 minutes. It can also extend a qualifying sequential infusion reported with 96367 and its required primary administration code. Report one unit for each additional hour that meets the time threshold; a final increment must exceed 30 minutes. Record the start and stop times for each drug, along with its identity, dose, and route. CMS treats 96366 as an add-on paid within the primary procedure's global period, so it cannot be billed alone. As an incident-to service, it is billed only when performed under physician supervision. Report a separately billable drug supply with its appropriate HCPCS code and units.

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 North Carolina compares for 96366

Across 109 of 109 payment localities, the office rate for 96366 runs from $19.10 in Arkansas to $28.53 in San Benito County, CA. North Carolina pays $20.25. The RVUs are the same everywhere; the geographic indexes change the dollars.

96366 in North Carolina vs other payment areas
  1. North Carolina · this page$20.25
  2. Los Angeles, CA · California$24.26+$4.01
  3. Washington, DC area · District of Columbia$24.41+$4.16
  4. Miami, FL · Florida$22.50+$2.25
  5. Chicago, IL · Illinois$21.93+$1.68
  6. Manhattan, NY · New York$24.39+$4.14
  7. Alaska · Alaska$25.21+$4.96

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

Every other payment area

96366 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$19.35—
ArkansasArkansas$19.10—
ArizonaArizona$20.86—
Bakersfield, CACalifornia$22.80—
Chico, CACalifornia$22.77—
El Centro, CACalifornia$22.77—
Fresno, CACalifornia$22.77—
Hanford, CACalifornia$22.77—

96366 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.

$19.10

$25.65

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

View every state and territory as a table
96366 office rate range by state
State / territoryOffice rate rangeLocalities
AK$25.211
AL$19.351
AR$19.101
AZ$20.861
CA$22.77–$28.5329
CO$22.341
CT$22.721
DC$24.411
DE$21.191
FL$20.88–$22.503
GA$19.82–$21.702
GU$23.301
HI$23.301
IA$19.901
ID$20.001
IL$20.26–$22.084
IN$20.111
KS$19.771
KY$19.681
LA$19.63–$20.542
MA$22.20–$24.502
MD$21.59–$24.413
ME$20.05–$21.122
MI$20.11–$21.082
MN$21.581
MO$19.29–$20.663
MS$19.201
MT$21.381
NC$20.251
ND$21.181
NE$20.011
NH$21.951
NJ$23.03–$24.182
NM$20.201
NV$21.341
NY$20.53–$24.895
OH$20.071
OK$19.691
OR$21.22–$23.062
PA$20.13–$22.172
PR$21.541
RI$21.951
SC$20.181
SD$21.151
TN$19.851
TX$20.00–$22.228
UT$20.441
VA$21.02–$24.412
VI$21.541
VT$21.061
WA$22.17–$25.032
WI$20.511
WV$19.551
WY$21.291

See 96366 in every payment locality

How the 96366 rate is calculated

Each of 96366’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 · 96366

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.18

0.18 RVUs× 1.000 GPCI

Practice expense0.45

0.45 RVUs× 1.000 GPCI

Malpractice0.01

0.01 RVUs× 1.000 GPCI

Adjusted RVUs

0.6400

Conversion factor

$33.4009

Medicare rate

$21.38

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

The exact North Carolina inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,780

Code
96366
Physician work
0.18
Practice expense
0.45
Malpractice
0.01

GPCI2026.csv

83

Locality
North Carolina
Physician work
1.000
Practice expense
0.933
Malpractice
0.639
Office calculation for 96366 in North Carolina
ComponentRVULocality factorAdjusted
Physician work0.18× 1.0000.1800
Practice expense0.45× 0.9330.4199
Malpractice0.01× 0.6390.0064
Total RVUs0.6062
Conversion factor× 33.4009

Office rate, North Carolina$20.25

Office: (0.18 × 1 + 0.45 × 0.933 + 0.01 × 0.639) × $33.4009 = $20.25

Open 96366 in the RVU calculator

Payment rules and modifiers for 96366

The CMS indicators that decide how 96366 is paid alongside other services.

CMS payment indicators · 96366

IV infusion add-on hour, therapeutic or diagnostic, each additional hour

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
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/technical5Incident-to service.

How 96366 has changed in North Carolina

96366 · Office / nonfacility

$20.25

Effective 2026-10-01

The base rate is $1.93 higher than on 2025-10-01, moving from $18.32 to $20.25 (10.5%).

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

    $18.32changed to$20.25

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 0.41 changed to 0.45
    • Practice expense GPCI 0.926 changed to 0.933
    • Malpractice GPCI 0.665 changed to 0.639

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $19.16changed to$18.32

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.42 changed to 0.41

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $18.85changed to$19.16

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $19.54changed to$18.85

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense GPCI 0.927 changed to 0.926
    • Malpractice GPCI 0.742 changed to 0.665
  5. January 1, 2023

    RVU23A

    $20.32changed to$19.54

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 0.43 changed to 0.42
    • Practice expense GPCI 0.928 changed to 0.927
    • Malpractice GPCI 0.819 changed to 0.742

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $21.14changed to$20.32

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 0.45 changed to 0.43

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $20.87changed to$21.14

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.42 changed to 0.45
    • Practice expense GPCI 0.930 changed to 0.928
    • Malpractice GPCI 0.757 changed to 0.819

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $20.83changed to$20.87

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense GPCI 0.931 changed to 0.930
    • Malpractice GPCI 0.695 changed to 0.757

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $21.14changed to$20.83

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.43 changed to 0.42

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $18.08changed to$21.14

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.34 changed to 0.43
    • Malpractice GPCI 0.732 changed to 0.695

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $18.04changed to$18.08

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense GPCI 0.930 changed to 0.931
    • Malpractice GPCI 0.768 changed to 0.732

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $18.11changed to$18.04

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $18.02changed to$18.11

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $17.69changed to$18.02

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 0.33 changed to 0.34
    • Practice expense GPCI 0.929 changed to 0.930
    • Malpractice GPCI 0.732 changed to 0.768

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $20.55changed to$17.69

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.45 changed to 0.33
    • Practice expense GPCI 0.927 changed to 0.929
    • Malpractice GPCI 0.695 changed to 0.732

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $20.55

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$20.25Not available in this settingRVU26D
2026-07-01$20.25Not available in this settingRVU26C
2026-04-01$20.25Not available in this settingRVU26B
2026-01-01$20.25Not available in this settingRVU26A
2025-10-01$18.32Not available in this settingRVU25D
2025-07-01$18.32Not available in this settingRVU25C
2025-04-01$18.32Not available in this settingRVU25B
2025-01-01$18.32Not available in this settingRVU25A
2024-10-01$19.16Not available in this settingRVU24D
2024-07-01$19.16Not available in this settingRVU24C
2024-04-01$19.16Not available in this settingRVU24B
2024-03-09$19.16Not available in this settingRVU24AR
2024-01-01$18.85Not available in this settingRVU24A
2023-10-01$19.54Not available in this settingRVU23D
2023-07-01$19.54Not available in this settingRVU23C
2023-04-01$19.54Not available in this settingRVU23B
2023-01-01$19.54Not available in this settingRVU23A
2022-10-01$20.32Not available in this settingRVU22D
2022-07-01$20.32Not available in this settingRVU22C
2022-04-01$20.32Not available in this settingRVU22B
2022-01-01$20.32Not available in this settingRVU22A
2021-10-01$21.14Not available in this settingRVU21D
2021-07-01$21.14Not available in this settingRVU21C
2021-04-01$21.14Not available in this settingRVU21B
2021-01-01$21.14Not available in this settingRVU21A
2020-10-01$20.87Not available in this settingRVU20D
2020-07-01$20.87Not available in this settingRVU20C
2020-04-01$20.87Not available in this settingRVU20B
2020-01-01$20.87Not available in this settingRVU20A
2019-10-01$20.83Not available in this settingRVU19D
2019-07-01$20.83Not available in this settingRVU19C
2019-04-01$20.83Not available in this settingRVU19B
2019-01-01$20.83Not available in this settingRVU19A
2018-10-01$21.14Not available in this settingRVU18D
2018-07-01$21.14Not available in this settingRVU18C
2018-04-01$21.14Not available in this settingRVU18B
2018-01-01$21.14Not available in this settingRVU18AR1
2017-10-01$18.08Not available in this settingRVU17D
2017-07-01$18.08Not available in this settingRVU17C
2017-04-01$18.08Not available in this settingRVU17B
2017-01-01$18.08Not available in this settingRVU17A
2016-10-01$18.04Not available in this settingRVU16D
2016-07-01$18.04Not available in this settingRVU16C
2016-04-01$18.04Not available in this settingRVU16B
2016-01-01$18.04Not available in this settingRVU16A
2015-10-01$18.11Not available in this settingRVU15D
2015-07-01$18.11Not available in this settingRVU15C
2015-04-01$18.02Not available in this settingRVU15B
2015-01-01$18.02Not available in this settingRVU15A
2014-10-01$17.69Not available in this settingRVU14D
2014-07-01$17.69Not available in this settingRVU14C
2014-04-01$17.69Not available in this settingRVU14B
2014-01-01$17.69Not available in this settingRVU14A
2013-10-01$20.55Not available in this settingRVU13D
2013-07-01$20.55Not available in this settingRVU13C
2013-04-01$20.55Not available in this settingRVU13B
2013-01-01$20.55Not available in this settingRVU13AR

Price 96366 for an earlier date of service

Where the North Carolina rate applies

North Carolina is a Medicare payment area, not a city. Our Census mapping connects it to 785 cities and communities in North Carolina. Some span more than one payment area; confirm with the service ZIP.

  • Aberdeen
  • Advance
  • Ahoskie
  • Alamance
  • Albemarle
  • Alexis
  • Alliance
  • Altamahaw

Browse all communities in North Carolina

96366 billing questions

How many minutes past the first hour are needed to bill this code?

The additional time must exceed 30 minutes beyond the first hour. A single-drug infusion lasting 61 to 90 minutes supports 96365 alone; at 91 minutes, it supports one unit of 96366.

Can this code be reported with a sequential infusion code?

Yes. If a sequential infusion of a different drug reported with 96367 runs long enough, 96366 captures its qualifying additional time. The encounter must also include the required primary administration code.

Should this code be used for extra hours of hydration or chemotherapy?

No. Additional hydration hours are reported with 96361. Additional hours of chemotherapy or other highly complex infusion administration are reported with 96415.

How are units counted for a long infusion?

Report one unit for each qualifying additional hour. A four-hour infusion of a drug appropriately reported under 96365 supports 96365 plus three units of 96366.

Who can perform the service and how is it billed?

Clinical staff such as an infusion nurse typically perform it. CMS identifies it as an incident-to service billed only when performed under physician supervision; documented start and stop times support the units.

Is the drug included in this code?

No. 96366 reports additional administration time; report a separately billable infused drug with its appropriate HCPCS drug code and units.

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 96366PPRRVU2026_Oct_nonQPP.csv, line 12,780 (RVU26D)
Geographic factors for North CarolinaGPCI2026.csv, line 83 (RVU26D)

Open CMS sourceHow we calculate rates

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