CPT code 94664: Inhaler training, technique demonstration and evaluation2026 Medicare rate & RVUs in Ohio
Report this service when a clinician demonstrates or evaluates a patient's use of an inhaler, nebulizer, or other aerosol delivery device.
In Ohio, Medicare pays $18.36 for 94664 in the office.
Check a contract rate as a % of Medicare · 94664 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 94664 covers
This service involves teaching a patient how to use an aerosol delivery device or watching the patient use it to evaluate technique. The clinician may correct errors such as poor coordination with a metered-dose inhaler or improper handling of a nebulizer. It is commonly provided in an office or other setting where respiratory care is delivered, by a physician or appropriately supervised clinical staff.
Report the service for device-use instruction or technique evaluation, not simply because an inhaled medication was administered. Documentation should identify the device, the instruction or evaluation performed, and relevant findings about the patient's technique. CMS treats 94664 as an incident-to service: it may be billed only when performed under physician supervision.
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 Ohio compares for 94664
Across 109 of 109 payment localities, the office rate for 94664 runs from $16.99 in Arkansas to $28.29 in San Benito County, CA. Ohio pays $18.36. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Ohio · this page$18.36
- Los Angeles, CA · California$23.36+$5.00
- Washington, DC area · District of Columbia$23.56+$5.20
- Miami, FL · Florida$21.86+$3.50
- Chicago, IL · Illinois$21.00+$2.64
- Manhattan, NY · New York$23.57+$5.21
- Alaska · Alaska$21.00+$2.64
Other areas in Ohio first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $17.33 | — |
| ArkansasArkansas | $16.99 | — |
| ArizonaArizona | $19.34 | — |
| Bakersfield, CACalifornia | $21.64 | — |
| Chico, CACalifornia | $21.59 | — |
| El Centro, CACalifornia | $21.59 | — |
| Fresno, CACalifornia | $21.59 | — |
| Hanford, CACalifornia | $21.59 | — |
| Madera, CACalifornia | $21.59 | — |
| Merced, CACalifornia | $21.59 | — |
| Modesto, CACalifornia | $21.59 | — |
| Napa, CACalifornia | $25.87 | — |
| Oxnard, CACalifornia | $23.31 | — |
| Redding, CACalifornia | $21.59 | — |
| Rest of CaliforniaCalifornia | $21.59 | — |
| Riverside, CACalifornia | $21.80 | — |
| Sacramento, CACalifornia | $22.89 | — |
| Salinas, CACalifornia | $22.81 | — |
| San Diego, CACalifornia | $23.53 | — |
| Marin County, CACalifornia | $27.62 | — |
| San Francisco, CACalifornia | $27.60 | — |
| San Benito County, CACalifornia | $28.29 | — |
| Santa Clara County, CACalifornia | $28.20 | — |
| San Luis Obispo, CACalifornia | $22.42 | — |
| Santa Cruz, CACalifornia | $23.90 | — |
| Santa Maria, CACalifornia | $22.95 | — |
| Santa Rosa, CACalifornia | $24.15 | — |
| Stockton, CACalifornia | $21.59 | — |
| Vallejo, CACalifornia | $25.84 | — |
| Visalia, CACalifornia | $21.59 | — |
| Yuba City, CACalifornia | $21.59 | — |
| ColoradoColorado | $21.13 | — |
| ConnecticutConnecticut | $21.67 | — |
| DelawareDelaware | $19.74 | — |
| Fort Lauderdale, FLFlorida | $20.83 | — |
| Rest of FloridaFlorida | $19.52 | — |
| Atlanta, GAGeorgia | $20.48 | — |
| Rest of GeorgiaGeorgia | $18.08 | — |
| Hawaii, Guam, HIHawaii | $22.41 | — |
| IowaIowa | $17.99 | — |
| IdahoIdaho | $18.14 | — |
| East St. Louis, ILIllinois | $19.17 | — |
| Rest of IllinoisIllinois | $18.73 | — |
| Suburban Chicago, ILIllinois | $21.08 | — |
| IndianaIndiana | $18.28 | — |
| KansasKansas | $17.85 | — |
| KentuckyKentucky | $17.83 | — |
| New Orleans, LALouisiana | $18.99 | — |
| Rest of LouisianaLouisiana | $17.78 | — |
| Metropolitan Boston, MAMassachusetts | $23.73 | — |
| Rest of MassachusettsMassachusetts | $20.93 | — |
| Baltimore area, MDMaryland | $21.61 | — |
| Rest of MarylandMaryland | $20.22 | — |
| Rest of MaineMaine | $18.24 | — |
| Southern Maine, MEMaine | $19.62 | — |
| Detroit, MIMichigan | $19.82 | — |
| Rest of MichiganMichigan | $18.44 | — |
| MinnesotaMinnesota | $20.13 | — |
| Metropolitan Kansas City, MOMissouri | $18.84 | — |
| Metropolitan St. Louis, MOMissouri | $19.11 | — |
| Rest of MissouriMissouri | $17.35 | — |
| MississippiMississippi | $17.17 | — |
| MontanaMontana | $20.04 | — |
| North CarolinaNorth Carolina | $18.50 | — |
| North DakotaNorth Dakota | $19.64 | — |
| NebraskaNebraska | $18.13 | — |
| New HampshireNew Hampshire | $20.75 | — |
| Northern New JerseyNew Jersey | $23.19 | — |
| Rest of New JerseyNew Jersey | $21.89 | — |
| New MexicoNew Mexico | $18.57 | — |
| NevadaNevada | $19.95 | — |
| NYC suburbs and Long Island, NYNew York | $24.27 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $22.02 | — |
| Queens, NYNew York | $23.86 | — |
| Rest of New YorkNew York | $18.87 | — |
| OklahomaOklahoma | $17.82 | — |
| Portland, OROregon | $22.02 | — |
| Rest of OregonOregon | $19.76 | — |
| Metropolitan Philadelphia, PAPennsylvania | $20.96 | — |
| Rest of PennsylvaniaPennsylvania | $18.42 | — |
| Puerto RicoPuerto Rico | $20.24 | — |
| Rhode IslandRhode Island | $20.61 | — |
| South CarolinaSouth Carolina | $18.47 | — |
| South DakotaSouth Dakota | $19.60 | — |
| TennesseeTennessee | $17.97 | — |
| Austin, TXTexas | $21.09 | — |
| Beaumont, TXTexas | $18.25 | — |
| Brazoria, TXTexas | $19.72 | — |
| Dallas, TXTexas | $19.87 | — |
| Fort Worth, TXTexas | $19.68 | — |
| Galveston, TXTexas | $19.79 | — |
| Houston, TXTexas | $20.16 | — |
| Rest of TexasTexas | $18.99 | — |
| UtahUtah | $18.81 | — |
| VirginiaVirginia | $19.51 | — |
| Virgin Islands, VIUnited States Virgin Islands | $20.24 | — |
| VermontVermont | $19.52 | — |
| Rest of WashingtonWashington | $20.91 | — |
| King County, WAWashington | $24.32 | — |
| WisconsinWisconsin | $18.76 | — |
| West VirginiaWest Virginia | $17.79 | — |
| WyomingWyoming | $19.87 | — |
94664 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.
$16.99
$24.94
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 | $21.00 | 1 |
| AL | $17.33 | 1 |
| AR | $16.99 | 1 |
| AZ | $19.34 | 1 |
| CA | $21.59–$28.29 | 29 |
| CO | $21.13 | 1 |
| CT | $21.67 | 1 |
| DC | $23.56 | 1 |
| DE | $19.74 | 1 |
| FL | $19.52–$21.86 | 3 |
| GA | $18.08–$20.48 | 2 |
| GU | $22.41 | 1 |
| HI | $22.41 | 1 |
| IA | $17.99 | 1 |
| ID | $18.14 | 1 |
| IL | $18.73–$21.08 | 4 |
| IN | $18.28 | 1 |
| KS | $17.85 | 1 |
| KY | $17.83 | 1 |
| LA | $17.78–$18.99 | 2 |
| MA | $20.93–$23.73 | 2 |
| MD | $20.22–$23.56 | 3 |
| ME | $18.24–$19.62 | 2 |
| MI | $18.44–$19.82 | 2 |
| MN | $20.13 | 1 |
| MO | $17.35–$19.11 | 3 |
| MS | $17.17 | 1 |
| MT | $20.04 | 1 |
| NC | $18.50 | 1 |
| ND | $19.64 | 1 |
| NE | $18.13 | 1 |
| NH | $20.75 | 1 |
| NJ | $21.89–$23.19 | 2 |
| NM | $18.57 | 1 |
| NV | $19.95 | 1 |
| NY | $18.87–$24.27 | 5 |
| OH | $18.36 | 1 |
| OK | $17.82 | 1 |
| OR | $19.76–$22.02 | 2 |
| PA | $18.42–$20.96 | 2 |
| PR | $20.24 | 1 |
| RI | $20.61 | 1 |
| SC | $18.47 | 1 |
| SD | $19.60 | 1 |
| TN | $17.97 | 1 |
| TX | $18.25–$21.09 | 8 |
| UT | $18.81 | 1 |
| VA | $19.51–$23.56 | 2 |
| VI | $20.24 | 1 |
| VT | $19.52 | 1 |
| WA | $20.91–$24.32 | 2 |
| WI | $18.76 | 1 |
| WV | $17.79 | 1 |
| WY | $19.87 | 1 |
How the 94664 rate is calculated
Each of 94664’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 · 94664
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.58
0.58 RVUs× 1.000 GPCI
Malpractice0.02
0.02 RVUs× 1.000 GPCI
Adjusted RVUs
0.6000
Conversion factor
$33.4009
Medicare rate
$20.04
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Ohio inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
12,417
- Code
- 94664
- Physician work
- 0.00
- Practice expense
- 0.58
- Malpractice
- 0.02
GPCI2026.csv
85
- Locality
- Ohio
- Physician work
- 1.000
- Practice expense
- 0.913
- Malpractice
- 1.008
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.000 | 0.0000 |
| Practice expense | 0.58 | × 0.913 | 0.5295 |
| Malpractice | 0.02 | × 1.008 | 0.0202 |
| Total RVUs | 0.5497 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Ohio$18.36
Office: (0 × 1 + 0.58 × 0.913 + 0.02 × 1.008) × $33.4009 = $18.36
Payment rules and modifiers for 94664
The CMS indicators that decide how 94664 is paid alongside other services.
CMS payment indicators · 94664
Inhaler training, technique demonstration and evaluation
| 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 | 5 | Incident-to service. |
How 94664 has changed in Ohio
94664 · Office / nonfacility
$18.36
Effective 2026-10-01
The base rate is $2.37 higher than on 2025-10-01, moving from $15.99 to $18.36 (14.8%).
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
$15.99changed to$18.36
- Conversion factor 32.3465 changed to 33.4009
- Practice expense RVU 0.52 changed to 0.58
- Practice expense GPCI 0.911 changed to 0.913
- Malpractice GPCI 1.033 changed to 1.008
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$16.46changed to$15.99
- Conversion factor 33.2875 changed to 32.3465
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$16.19changed to$16.46
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$15.81changed to$16.19
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 0.50 changed to 0.52
- Malpractice RVU 0.01 changed to 0.02
- Practice expense GPCI 0.912 changed to 0.911
- Malpractice GPCI 1.063 changed to 1.033
January 1, 2023
RVU23A
$15.86changed to$15.81
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 0.49 changed to 0.50
- Practice expense GPCI 0.913 changed to 0.912
- Malpractice GPCI 1.094 changed to 1.063
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$15.67changed to$15.86
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 0.48 changed to 0.49
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$15.57changed to$15.67
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 0.46 changed to 0.48
- Practice expense GPCI 0.915 changed to 0.913
- Malpractice GPCI 1.049 changed to 1.094
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$15.89changed to$15.57
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 0.47 changed to 0.46
- Practice expense GPCI 0.917 changed to 0.915
- Malpractice GPCI 1.005 changed to 1.049
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$16.21changed to$15.89
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 0.48 changed to 0.47
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$16.17changed to$16.21
- Conversion factor 35.8887 changed to 35.9996
- Practice expense GPCI 0.918 changed to 0.917
- Malpractice GPCI 0.999 changed to 1.005
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$16.13changed to$16.17
- Conversion factor 35.8043 changed to 35.8887
- Malpractice GPCI 0.993 changed to 0.999
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$16.19changed to$16.13
- Conversion factor 35.9335 changed to 35.8043
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$16.11changed to$16.19
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$15.94changed to$16.11
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 0.47 changed to 0.48
- Practice expense GPCI 0.923 changed to 0.918
- Malpractice GPCI 1.117 changed to 0.993
Held through RVU15B.
January 1, 2014
RVU14A
$17.45changed to$15.94
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 0.54 changed to 0.47
- Practice expense GPCI 0.927 changed to 0.923
- Malpractice GPCI 1.240 changed to 1.117
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $17.45
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $18.36 | Not available in this setting | RVU26D |
| 2026-07-01 | $18.36 | Not available in this setting | RVU26C |
| 2026-04-01 | $18.36 | Not available in this setting | RVU26B |
| 2026-01-01 | $18.36 | Not available in this setting | RVU26A |
| 2025-10-01 | $15.99 | Not available in this setting | RVU25D |
| 2025-07-01 | $15.99 | Not available in this setting | RVU25C |
| 2025-04-01 | $15.99 | Not available in this setting | RVU25B |
| 2025-01-01 | $15.99 | Not available in this setting | RVU25A |
| 2024-10-01 | $16.46 | Not available in this setting | RVU24D |
| 2024-07-01 | $16.46 | Not available in this setting | RVU24C |
| 2024-04-01 | $16.46 | Not available in this setting | RVU24B |
| 2024-03-09 | $16.46 | Not available in this setting | RVU24AR |
| 2024-01-01 | $16.19 | Not available in this setting | RVU24A |
| 2023-10-01 | $15.81 | Not available in this setting | RVU23D |
| 2023-07-01 | $15.81 | Not available in this setting | RVU23C |
| 2023-04-01 | $15.81 | Not available in this setting | RVU23B |
| 2023-01-01 | $15.81 | Not available in this setting | RVU23A |
| 2022-10-01 | $15.86 | Not available in this setting | RVU22D |
| 2022-07-01 | $15.86 | Not available in this setting | RVU22C |
| 2022-04-01 | $15.86 | Not available in this setting | RVU22B |
| 2022-01-01 | $15.86 | Not available in this setting | RVU22A |
| 2021-10-01 | $15.67 | Not available in this setting | RVU21D |
| 2021-07-01 | $15.67 | Not available in this setting | RVU21C |
| 2021-04-01 | $15.67 | Not available in this setting | RVU21B |
| 2021-01-01 | $15.67 | Not available in this setting | RVU21A |
| 2020-10-01 | $15.57 | Not available in this setting | RVU20D |
| 2020-07-01 | $15.57 | Not available in this setting | RVU20C |
| 2020-04-01 | $15.57 | Not available in this setting | RVU20B |
| 2020-01-01 | $15.57 | Not available in this setting | RVU20A |
| 2019-10-01 | $15.89 | Not available in this setting | RVU19D |
| 2019-07-01 | $15.89 | Not available in this setting | RVU19C |
| 2019-04-01 | $15.89 | Not available in this setting | RVU19B |
| 2019-01-01 | $15.89 | Not available in this setting | RVU19A |
| 2018-10-01 | $16.21 | Not available in this setting | RVU18D |
| 2018-07-01 | $16.21 | Not available in this setting | RVU18C |
| 2018-04-01 | $16.21 | Not available in this setting | RVU18B |
| 2018-01-01 | $16.21 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $16.17 | Not available in this setting | RVU17D |
| 2017-07-01 | $16.17 | Not available in this setting | RVU17C |
| 2017-04-01 | $16.17 | Not available in this setting | RVU17B |
| 2017-01-01 | $16.17 | Not available in this setting | RVU17A |
| 2016-10-01 | $16.13 | Not available in this setting | RVU16D |
| 2016-07-01 | $16.13 | Not available in this setting | RVU16C |
| 2016-04-01 | $16.13 | Not available in this setting | RVU16B |
| 2016-01-01 | $16.13 | Not available in this setting | RVU16A |
| 2015-10-01 | $16.19 | Not available in this setting | RVU15D |
| 2015-07-01 | $16.19 | Not available in this setting | RVU15C |
| 2015-04-01 | $16.11 | Not available in this setting | RVU15B |
| 2015-01-01 | $16.11 | Not available in this setting | RVU15A |
| 2014-10-01 | $15.94 | Not available in this setting | RVU14D |
| 2014-07-01 | $15.94 | Not available in this setting | RVU14C |
| 2014-04-01 | $15.94 | Not available in this setting | RVU14B |
| 2014-01-01 | $15.94 | Not available in this setting | RVU14A |
| 2013-10-01 | $17.45 | Not available in this setting | RVU13D |
| 2013-07-01 | $17.45 | Not available in this setting | RVU13C |
| 2013-04-01 | $17.45 | Not available in this setting | RVU13B |
| 2013-01-01 | $17.45 | Not available in this setting | RVU13AR |
Where the Ohio rate applies
Ohio is a Medicare payment area, not a city. Our Census mapping connects it to 1265 cities and communities in Ohio. Some span more than one payment area; confirm with the service ZIP.
- Aberdeen
- Ada
- Adamsville
- Addyston
- Adelphi
- Adena
- Ai
- Akron
94664 billing questions
When should 94664 be reported instead of 94640?
Use 94664 for demonstrating or evaluating the patient's technique with an aerosol delivery device. Code 94640 describes an inhalation treatment; a treatment alone does not establish that device instruction or evaluation occurred.
Can 94664 and 94640 be reported on the same date?
They may describe separate services when the patient receives an inhalation treatment and also receives distinct device-use instruction or technique evaluation. Document each service separately.
What documentation supports 94664?
Record the device involved, what instruction or technique assessment was performed, and any relevant technique problems or corrections.
Can clinical staff perform this service?
Yes, but CMS treats it as an incident-to service, so it may be billed only when performed under physician supervision.
Does administering medication by inhaler or nebulizer qualify by itself?
No. The service is demonstration or evaluation of the patient's device use; medication administration alone is not the service described by 94664.
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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