CPT code 97033: Iontophoresis, each 15 minutes2026 Medicare rate & RVUs in Mississippi
Reports therapist-administered iontophoresis that uses electrical current to deliver medication through the skin during a timed rehabilitation treatment.
In Mississippi, Medicare pays $17.56 for 97033 in the office.
Check a contract rate as a % of Medicare · 97033 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 97033 covers
Iontophoresis uses an electrical current to move a prescribed medication through the skin to a localized treatment area, often over an extremity with soft-tissue inflammation. Physical therapists and occupational therapists commonly provide it in outpatient rehabilitation settings; dexamethasone is one medication used for this purpose. The service is selected for medication delivery through the skin, not simply because electrical equipment is used during treatment.
Report one unit for each 15 minutes of treatment, supported by documentation of the treatment area, medication, skilled application, and time. Do not count the same treatment minutes toward another timed service. CMS treats this as a therapy service, so a professional-component modifier does not apply. When multiple therapy units are furnished on the same day, CMS reduces practice expense for the second and subsequent 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 Mississippi compares for 97033
Across 109 of 109 payment localities, the office rate for 97033 runs from $17.46 in Arkansas to $24.27 in San Benito County, CA. Mississippi pays $17.56. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Mississippi · this page$17.56
- Los Angeles, CA · California$21.12+$3.56
- Washington, DC area · District of Columbia$21.33+$3.77
- Miami, FL · Florida$19.96+$2.40
- Chicago, IL · Illinois$19.58+$2.02
- Manhattan, NY · New York$21.41+$3.85
- Alaska · Alaska$23.88+$6.32
Other areas in Mississippi first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $17.64 | — |
| ArkansasArkansas | $17.46 | — |
| ArizonaArizona | $18.68 | — |
| Bakersfield, CACalifornia | $20.03 | — |
| Chico, CACalifornia | $19.99 | — |
| El Centro, CACalifornia | $19.99 | — |
| Fresno, CACalifornia | $19.99 | — |
| Hanford, CACalifornia | $19.99 | — |
| Madera, CACalifornia | $19.99 | — |
| Merced, CACalifornia | $19.99 | — |
| Modesto, CACalifornia | $19.99 | — |
| Napa, CACalifornia | $22.61 | — |
| Oxnard, CACalifornia | $20.98 | — |
| Redding, CACalifornia | $19.99 | — |
| Rest of CaliforniaCalifornia | $19.99 | — |
| Riverside, CACalifornia | $20.11 | — |
| Sacramento, CACalifornia | $20.83 | — |
| Salinas, CACalifornia | $20.75 | — |
| San Diego, CACalifornia | $21.11 | — |
| Marin County, CACalifornia | $23.79 | — |
| San Francisco, CACalifornia | $23.78 | — |
| San Benito County, CACalifornia | $24.27 | — |
| Santa Clara County, CACalifornia | $24.22 | — |
| San Luis Obispo, CACalifornia | $20.42 | — |
| Santa Cruz, CACalifornia | $21.22 | — |
| Santa Maria, CACalifornia | $20.79 | — |
| Santa Rosa, CACalifornia | $21.43 | — |
| Stockton, CACalifornia | $19.99 | — |
| Vallejo, CACalifornia | $22.59 | — |
| Visalia, CACalifornia | $19.99 | — |
| Yuba City, CACalifornia | $19.99 | — |
| ColoradoColorado | $19.71 | — |
| ConnecticutConnecticut | $20.05 | — |
| DelawareDelaware | $18.93 | — |
| Fort Lauderdale, FLFlorida | $19.44 | — |
| Rest of FloridaFlorida | $18.77 | — |
| Atlanta, GAGeorgia | $19.29 | — |
| Rest of GeorgiaGeorgia | $18.02 | — |
| Hawaii, Guam, HIHawaii | $20.27 | — |
| IowaIowa | $17.99 | — |
| IdahoIdaho | $18.06 | — |
| East St. Louis, ILIllinois | $18.58 | — |
| Rest of IllinoisIllinois | $18.35 | — |
| Suburban Chicago, ILIllinois | $19.63 | — |
| IndianaIndiana | $18.14 | — |
| KansasKansas | $17.91 | — |
| KentuckyKentucky | $17.90 | — |
| New Orleans, LALouisiana | $18.49 | — |
| Rest of LouisianaLouisiana | $17.87 | — |
| Metropolitan Boston, MAMassachusetts | $21.30 | — |
| Rest of MassachusettsMassachusetts | $19.64 | — |
| Baltimore area, MDMaryland | $19.99 | — |
| Rest of MarylandMaryland | $19.22 | — |
| Rest of MaineMaine | $18.11 | — |
| Southern Maine, MEMaine | $18.83 | — |
| Detroit, MIMichigan | $18.92 | — |
| Rest of MichiganMichigan | $18.21 | — |
| MinnesotaMinnesota | $19.09 | — |
| Metropolitan Kansas City, MOMissouri | $18.42 | — |
| Metropolitan St. Louis, MOMissouri | $18.56 | — |
| Rest of MissouriMissouri | $17.65 | — |
| MontanaMontana | $19.04 | — |
| North CarolinaNorth Carolina | $18.25 | — |
| North DakotaNorth Dakota | $18.84 | — |
| NebraskaNebraska | $18.06 | — |
| New HampshireNew Hampshire | $19.41 | — |
| Northern New JerseyNew Jersey | $21.21 | — |
| Rest of New JerseyNew Jersey | $20.34 | — |
| New MexicoNew Mexico | $18.27 | — |
| NevadaNevada | $18.99 | — |
| NYC suburbs and Long Island, NYNew York | $21.77 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $20.45 | — |
| Queens, NYNew York | $21.57 | — |
| Rest of New YorkNew York | $18.44 | — |
| OhioOhio | $18.17 | — |
| OklahomaOklahoma | $17.89 | — |
| Portland, OROregon | $20.20 | — |
| Rest of OregonOregon | $18.90 | — |
| Metropolitan Philadelphia, PAPennsylvania | $19.67 | — |
| Rest of PennsylvaniaPennsylvania | $18.20 | — |
| Puerto RicoPuerto Rico | $19.14 | — |
| Rhode IslandRhode Island | $19.50 | — |
| South CarolinaSouth Carolina | $18.23 | — |
| South DakotaSouth Dakota | $18.82 | — |
| TennesseeTennessee | $17.97 | — |
| Austin, TXTexas | $19.60 | — |
| Beaumont, TXTexas | $18.11 | — |
| Brazoria, TXTexas | $18.94 | — |
| Dallas, TXTexas | $19.03 | — |
| Fort Worth, TXTexas | $18.93 | — |
| Galveston, TXTexas | $18.98 | — |
| Houston, TXTexas | $19.16 | — |
| Rest of TexasTexas | $18.50 | — |
| UtahUtah | $18.40 | — |
| VirginiaVirginia | $18.77 | — |
| Virgin Islands, VIUnited States Virgin Islands | $19.14 | — |
| VermontVermont | $18.77 | — |
| Rest of WashingtonWashington | $19.60 | — |
| King County, WAWashington | $21.69 | — |
| WisconsinWisconsin | $18.39 | — |
| West VirginiaWest Virginia | $17.87 | — |
| WyomingWyoming | $18.95 | — |
97033 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.
$17.46
$23.88
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 | $23.88 | 1 |
| AL | $17.64 | 1 |
| AR | $17.46 | 1 |
| AZ | $18.68 | 1 |
| CA | $19.99–$24.27 | 29 |
| CO | $19.71 | 1 |
| CT | $20.05 | 1 |
| DC | $21.33 | 1 |
| DE | $18.93 | 1 |
| FL | $18.77–$19.96 | 3 |
| GA | $18.02–$19.29 | 2 |
| GU | $20.27 | 1 |
| HI | $20.27 | 1 |
| IA | $17.99 | 1 |
| ID | $18.06 | 1 |
| IL | $18.35–$19.63 | 4 |
| IN | $18.14 | 1 |
| KS | $17.91 | 1 |
| KY | $17.90 | 1 |
| LA | $17.87–$18.49 | 2 |
| MA | $19.64–$21.30 | 2 |
| MD | $19.22–$21.33 | 3 |
| ME | $18.11–$18.83 | 2 |
| MI | $18.21–$18.92 | 2 |
| MN | $19.09 | 1 |
| MO | $17.65–$18.56 | 3 |
| MS | $17.56 | 1 |
| MT | $19.04 | 1 |
| NC | $18.25 | 1 |
| ND | $18.84 | 1 |
| NE | $18.06 | 1 |
| NH | $19.41 | 1 |
| NJ | $20.34–$21.21 | 2 |
| NM | $18.27 | 1 |
| NV | $18.99 | 1 |
| NY | $18.44–$21.77 | 5 |
| OH | $18.17 | 1 |
| OK | $17.89 | 1 |
| OR | $18.90–$20.20 | 2 |
| PA | $18.20–$19.67 | 2 |
| PR | $19.14 | 1 |
| RI | $19.50 | 1 |
| SC | $18.23 | 1 |
| SD | $18.82 | 1 |
| TN | $17.97 | 1 |
| TX | $18.11–$19.60 | 8 |
| UT | $18.40 | 1 |
| VA | $18.77–$21.33 | 2 |
| VI | $19.14 | 1 |
| VT | $18.77 | 1 |
| WA | $19.60–$21.69 | 2 |
| WI | $18.39 | 1 |
| WV | $17.87 | 1 |
| WY | $18.95 | 1 |
How the 97033 rate is calculated
Each of 97033’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 · 97033
RVUs × geographic indexes × conversion factor
Work0.26
0.26 RVUs× 1.000 GPCI
Practice expense0.30
0.30 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.5700
Conversion factor
$33.4009
Medicare rate
$19.04
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Mississippi inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
12,853
- Code
- 97033
- Physician work
- 0.26
- Practice expense
- 0.30
- Malpractice
- 0.01
GPCI2026.csv
67
- Locality
- Mississippi
- Physician work
- 1.000
- Practice expense
- 0.861
- Malpractice
- 0.739
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.26 | × 1.000 | 0.2600 |
| Practice expense | 0.30 | × 0.861 | 0.2583 |
| Malpractice | 0.01 | × 0.739 | 0.0074 |
| Total RVUs | 0.5257 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Mississippi$17.56
Office: (0.26 × 1 + 0.3 × 0.861 + 0.01 × 0.739) × $33.4009 = $17.56
Payment rules and modifiers for 97033
The CMS indicators that decide how 97033 is paid alongside other services.
CMS payment indicators · 97033
Iontophoresis, each 15 minutes
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 5 | Therapy reduction: practice expense of the second and later units is reduced. |
| 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 | 7 | Therapy service: the split doesn’t apply. |
What modifiers do to the payment
Modifier CQ · payment effect
With and without the modifier
97033 without CQ · national office
$19.04
Iontophoresis, each 15 minutes
97033-CQ · Allowed amount unchanged
$19.04
Medicare cuts its own payment by 15% after the patient’s 20% coinsurance; the allowed amount stays the same. On $100 allowed: $20 coinsurance, then Medicare pays $68 instead of $80.
How 97033 has changed in Mississippi
97033 · Office / nonfacility
$17.56
Effective 2026-10-01
The base rate is $0.36 higher than on 2025-10-01, moving from $17.20 to $17.56 (2.1%).
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
$17.20changed to$17.56
- Conversion factor 32.3465 changed to 33.4009
- Practice expense RVU 0.31 changed to 0.30
- Practice expense GPCI 0.852 changed to 0.861
- Malpractice GPCI 0.768 changed to 0.739
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$17.70changed to$17.20
- Conversion factor 33.2875 changed to 32.3465
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$17.41changed to$17.70
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$18.24changed to$17.41
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 0.32 changed to 0.31
- Practice expense GPCI 0.847 changed to 0.852
- Malpractice GPCI 0.720 changed to 0.768
January 1, 2023
RVU23A
$18.26changed to$18.24
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 0.31 changed to 0.32
- Practice expense GPCI 0.842 changed to 0.847
- Malpractice GPCI 0.671 changed to 0.720
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$18.71changed to$18.26
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 0.32 changed to 0.31
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$19.46changed to$18.71
- Conversion factor 36.0896 changed to 34.8931
- Practice expense GPCI 0.856 changed to 0.842
- Malpractice GPCI 0.521 changed to 0.671
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$19.54changed to$19.46
- Conversion factor 36.0391 changed to 36.0896
- Practice expense GPCI 0.870 changed to 0.856
- Malpractice GPCI 0.370 changed to 0.521
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$19.52changed to$19.54
- Conversion factor 35.9996 changed to 36.0391
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$20.40changed to$19.52
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 0.35 changed to 0.32
- Practice expense GPCI 0.867 changed to 0.870
- Malpractice GPCI 0.492 changed to 0.370
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$24.07changed to$20.40
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 0.47 changed to 0.35
- Practice expense GPCI 0.864 changed to 0.867
- Malpractice GPCI 0.613 changed to 0.492
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$29.74changed to$24.07
- Conversion factor 35.9335 changed to 35.8043
- Practice expense RVU 0.65 changed to 0.47
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$29.60changed to$29.74
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$29.39changed to$29.60
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 0.64 changed to 0.65
- Practice expense GPCI 0.865 changed to 0.864
- Malpractice GPCI 0.687 changed to 0.613
Held through RVU15B.
January 1, 2014
RVU14A
$29.73changed to$29.39
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 0.70 changed to 0.64
- Practice expense GPCI 0.866 changed to 0.865
- Malpractice GPCI 0.761 changed to 0.687
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $29.73
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $17.56 | Not available in this setting | RVU26D |
| 2026-07-01 | $17.56 | Not available in this setting | RVU26C |
| 2026-04-01 | $17.56 | Not available in this setting | RVU26B |
| 2026-01-01 | $17.56 | Not available in this setting | RVU26A |
| 2025-10-01 | $17.20 | Not available in this setting | RVU25D |
| 2025-07-01 | $17.20 | Not available in this setting | RVU25C |
| 2025-04-01 | $17.20 | Not available in this setting | RVU25B |
| 2025-01-01 | $17.20 | Not available in this setting | RVU25A |
| 2024-10-01 | $17.70 | Not available in this setting | RVU24D |
| 2024-07-01 | $17.70 | Not available in this setting | RVU24C |
| 2024-04-01 | $17.70 | Not available in this setting | RVU24B |
| 2024-03-09 | $17.70 | Not available in this setting | RVU24AR |
| 2024-01-01 | $17.41 | Not available in this setting | RVU24A |
| 2023-10-01 | $18.24 | Not available in this setting | RVU23D |
| 2023-07-01 | $18.24 | Not available in this setting | RVU23C |
| 2023-04-01 | $18.24 | Not available in this setting | RVU23B |
| 2023-01-01 | $18.24 | Not available in this setting | RVU23A |
| 2022-10-01 | $18.26 | Not available in this setting | RVU22D |
| 2022-07-01 | $18.26 | Not available in this setting | RVU22C |
| 2022-04-01 | $18.26 | Not available in this setting | RVU22B |
| 2022-01-01 | $18.26 | Not available in this setting | RVU22A |
| 2021-10-01 | $18.71 | Not available in this setting | RVU21D |
| 2021-07-01 | $18.71 | Not available in this setting | RVU21C |
| 2021-04-01 | $18.71 | Not available in this setting | RVU21B |
| 2021-01-01 | $18.71 | Not available in this setting | RVU21A |
| 2020-10-01 | $19.46 | Not available in this setting | RVU20D |
| 2020-07-01 | $19.46 | Not available in this setting | RVU20C |
| 2020-04-01 | $19.46 | Not available in this setting | RVU20B |
| 2020-01-01 | $19.46 | Not available in this setting | RVU20A |
| 2019-10-01 | $19.54 | Not available in this setting | RVU19D |
| 2019-07-01 | $19.54 | Not available in this setting | RVU19C |
| 2019-04-01 | $19.54 | Not available in this setting | RVU19B |
| 2019-01-01 | $19.54 | Not available in this setting | RVU19A |
| 2018-10-01 | $19.52 | Not available in this setting | RVU18D |
| 2018-07-01 | $19.52 | Not available in this setting | RVU18C |
| 2018-04-01 | $19.52 | Not available in this setting | RVU18B |
| 2018-01-01 | $19.52 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $20.40 | Not available in this setting | RVU17D |
| 2017-07-01 | $20.40 | Not available in this setting | RVU17C |
| 2017-04-01 | $20.40 | Not available in this setting | RVU17B |
| 2017-01-01 | $20.40 | Not available in this setting | RVU17A |
| 2016-10-01 | $24.07 | Not available in this setting | RVU16D |
| 2016-07-01 | $24.07 | Not available in this setting | RVU16C |
| 2016-04-01 | $24.07 | Not available in this setting | RVU16B |
| 2016-01-01 | $24.07 | Not available in this setting | RVU16A |
| 2015-10-01 | $29.74 | Not available in this setting | RVU15D |
| 2015-07-01 | $29.74 | Not available in this setting | RVU15C |
| 2015-04-01 | $29.60 | Not available in this setting | RVU15B |
| 2015-01-01 | $29.60 | Not available in this setting | RVU15A |
| 2014-10-01 | $29.39 | Not available in this setting | RVU14D |
| 2014-07-01 | $29.39 | Not available in this setting | RVU14C |
| 2014-04-01 | $29.39 | Not available in this setting | RVU14B |
| 2014-01-01 | $29.39 | Not available in this setting | RVU14A |
| 2013-10-01 | $29.73 | Not available in this setting | RVU13D |
| 2013-07-01 | $29.73 | Not available in this setting | RVU13C |
| 2013-04-01 | $29.73 | Not available in this setting | RVU13B |
| 2013-01-01 | $29.73 | Not available in this setting | RVU13AR |
Where the Mississippi rate applies
Mississippi is a Medicare payment area, not a city. Our Census mapping connects it to 427 cities and communities in Mississippi. Some span more than one payment area; confirm with the service ZIP.
- Abbeville
- Aberdeen
- Ackerman
- Agricola
- Alcorn State University
- Algoma
- Alligator
- Amory
97033 billing questions
How is this different from electrical stimulation?
Iontophoresis delivers medication through the skin using current. Report 97032 when the service is attended electrical stimulation rather than transdermal medication delivery.
How many units should be reported?
Each unit represents 15 minutes of iontophoresis treatment. Document the treatment time and do not count minutes already assigned to another timed service.
What documentation supports the service?
Record the medication, treatment area, skilled application, and time spent providing iontophoresis. The record should support why medication delivery by this method was part of the rehabilitation treatment.
Should a professional-component modifier be appended?
No. CMS identifies this as a therapy service for which a professional-component modifier does not apply.
How does the therapy multiple procedure reduction affect payment?
CMS reduces practice expense for the second and later therapy units furnished on the same day. The reduction applies to practice expense, not as a reduction to the documented treatment time.
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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