CPT 89230: Sweat collectionMedicare rate & RVUs
Reports collection of a sweat specimen, commonly for sweat chloride testing during evaluation for cystic fibrosis; laboratory analysis is coded separately.
Medicare pays $3.01 for 89230 nationally in the office. Local office rates run $2.47–$4.03.
Medicare rate · 89230
Sweat collection
Swap in your local Medicare rate.
- Work RVUs
- 0
- Total RVUs
- 0.09
- Global days
- XXX
National rate · 2026
$3.01
Office setting, before claim adjustments.
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 10 sections
What 89230 covers
This service covers obtaining a sweat specimen for laboratory testing, commonly sweat chloride analysis when cystic fibrosis is being evaluated. Trained laboratory personnel typically stimulate sweating with pilocarpine iontophoresis and collect the resulting sweat on an absorbent collector or in a collection device. The collection is performed in a clinical or laboratory setting equipped to obtain and handle the specimen for analysis.
Report 89230 for the collection procedure, not for measuring the specimen’s chloride content or interpreting the result. Documentation should identify the reason for testing, the collection method, and the specimen obtained and sent for analysis. CMS classifies this as a technical-component-only code; a separate code covers interpretation. The collection code therefore represents the technical service, while interpretation is reported separately under the applicable 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.
Where 89230 pays more and less
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
109 payment localities
$2.47 to $4.03
109 of 109 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Alabama | $2.53 | Unavailable |
| Alaska* | $3.03 | Unavailable |
| Arizona | $2.88 | Unavailable |
| Arkansas | $2.47 | Unavailable |
| Atlanta | $3.12 | Unavailable |
| Austin | $3.12 | Unavailable |
| Bakersfield | $3.13 | Unavailable |
| Baltimore/Surr. Cntys | $3.28 | Unavailable |
| Beaumont | $2.74 | Unavailable |
| Brazoria | $2.91 | Unavailable |
| Chicago | $3.45 | Unavailable |
| Chico | $3.11 | Unavailable |
| Colorado | $3.10 | Unavailable |
| Connecticut | $3.28 | Unavailable |
| Dallas | $2.95 | Unavailable |
| Dc + Md/Va Suburbs | $3.52 | Unavailable |
| Delaware | $2.94 | Unavailable |
| Detroit | $3.14 | Unavailable |
| East St. Louis | $3.13 | Unavailable |
| El Centro | $3.11 | Unavailable |
| Fort Lauderdale | $3.31 | Unavailable |
| Fort Worth | $2.93 | Unavailable |
| Fresno | $3.11 | Unavailable |
| Galveston | $2.93 | Unavailable |
| Hanford-Corcoran | $3.11 | Unavailable |
| Hawaii, Guam | $3.23 | Unavailable |
| Houston | $3.11 | Unavailable |
| Idaho | $2.62 | Unavailable |
| Indiana | $2.64 | Unavailable |
| Iowa | $2.58 | Unavailable |
| Kansas | $2.58 | Unavailable |
| Kentucky | $2.68 | Unavailable |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | $3.38 | Unavailable |
| Madera | $3.11 | Unavailable |
| Manhattan | $3.63 | Unavailable |
| Merced | $3.11 | Unavailable |
| Metropolitan Boston | $3.49 | Unavailable |
| Metropolitan Kansas City | $2.84 | Unavailable |
| Metropolitan Philadelphia | $3.18 | Unavailable |
| Metropolitan St. Louis | $2.88 | Unavailable |
| Miami | $3.63 | Unavailable |
| Minnesota | $2.85 | Unavailable |
| Mississippi | $2.55 | Unavailable |
| Modesto | $3.11 | Unavailable |
| Montana** | $3.01 | Unavailable |
| Napa | $3.69 | Unavailable |
| Nebraska | $2.59 | Unavailable |
| Nevada** | $2.95 | Unavailable |
| New Hampshire | $3.07 | Unavailable |
| New Mexico | $2.85 | Unavailable |
| New Orleans | $2.89 | Unavailable |
| North Carolina | $2.71 | Unavailable |
| North Dakota** | $2.81 | Unavailable |
| Northern Nj | $3.46 | Unavailable |
| Nyc Suburbs/Long Island | $3.80 | Unavailable |
| Ohio | $2.78 | Unavailable |
| Oklahoma | $2.65 | Unavailable |
| Oxnard-Thousand Oaks-Ventura | $3.37 | Unavailable |
| Portland | $3.22 | Unavailable |
| Poughkpsie/N Nyc Suburbs | $3.33 | Unavailable |
| Puerto Rico | $3.03 | Unavailable |
| Queens | $3.64 | Unavailable |
| Redding | $3.11 | Unavailable |
| Rest Of California | $3.11 | Unavailable |
| Rest Of Florida | $3.06 | Unavailable |
| Rest Of Georgia | $2.78 | Unavailable |
| Rest Of Illinois | $2.96 | Unavailable |
| Rest Of Louisiana | $2.68 | Unavailable |
| Rest Of Maine | $2.67 | Unavailable |
| Rest Of Maryland | $3.01 | Unavailable |
| Rest Of Massachusetts | $3.08 | Unavailable |
| Rest Of Michigan | $2.82 | Unavailable |
| Rest Of Missouri | $2.63 | Unavailable |
| Rest Of New Jersey | $3.28 | Unavailable |
| Rest Of New York | $2.77 | Unavailable |
| Rest Of Oregon | $2.90 | Unavailable |
| Rest Of Pennsylvania | $2.77 | Unavailable |
| Rest Of Texas | $2.84 | Unavailable |
| Rest Of Washington | $3.07 | Unavailable |
| Rhode Island | $3.06 | Unavailable |
| Riverside-San Bernardino-Ontario | $3.21 | Unavailable |
| Sacramento-Roseville-Folsom | $3.29 | Unavailable |
| Salinas | $3.28 | Unavailable |
| San Diego-Chula Vista-Carlsbad | $3.38 | Unavailable |
| San Francisco-Oakland-Berkeley (Marin Cnty) | $3.92 | Unavailable |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | $3.91 | Unavailable |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | $4.03 | Unavailable |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | $3.99 | Unavailable |
| San Luis Obispo-Paso Robles | $3.22 | Unavailable |
| Santa Cruz-Watsonville | $3.43 | Unavailable |
| Santa Maria-Santa Barbara | $3.29 | Unavailable |
| Santa Rosa-Petaluma | $3.46 | Unavailable |
| Seattle (King Cnty) | $3.55 | Unavailable |
| South Carolina | $2.75 | Unavailable |
| South Dakota** | $2.78 | Unavailable |
| Southern Maine | $2.86 | Unavailable |
| Stockton | $3.11 | Unavailable |
| Suburban Chicago | $3.34 | Unavailable |
| Tennessee | $2.61 | Unavailable |
| Utah | $2.81 | Unavailable |
| Vallejo | $3.68 | Unavailable |
| Vermont | $2.81 | Unavailable |
| Virgin Islands | $3.03 | Unavailable |
| Virginia | $2.86 | Unavailable |
| Visalia | $3.11 | Unavailable |
| West Virginia | $2.80 | Unavailable |
| Wisconsin | $2.66 | Unavailable |
| Wyoming** | $2.92 | Unavailable |
| Yuba City | $3.11 | Unavailable |
89230 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.
$2.47
$3.57
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 | $3.03 | 1 |
| AL | $2.53 | 1 |
| AR | $2.47 | 1 |
| AZ | $2.88 | 1 |
| CA | $3.11–$4.03 | 29 |
| CO | $3.10 | 1 |
| CT | $3.28 | 1 |
| DC | $3.52 | 1 |
| DE | $2.94 | 1 |
| FL | $3.06–$3.63 | 3 |
| GA | $2.78–$3.12 | 2 |
| GU | $3.23 | 1 |
| HI | $3.23 | 1 |
| IA | $2.58 | 1 |
| ID | $2.62 | 1 |
| IL | $2.96–$3.45 | 4 |
| IN | $2.64 | 1 |
| KS | $2.58 | 1 |
| KY | $2.68 | 1 |
| LA | $2.68–$2.89 | 2 |
| MA | $3.08–$3.49 | 2 |
| MD | $3.01–$3.52 | 3 |
| ME | $2.67–$2.86 | 2 |
| MI | $2.82–$3.14 | 2 |
| MN | $2.85 | 1 |
| MO | $2.63–$2.88 | 3 |
| MS | $2.55 | 1 |
| MT | $3.01 | 1 |
| NC | $2.71 | 1 |
| ND | $2.81 | 1 |
| NE | $2.59 | 1 |
| NH | $3.07 | 1 |
| NJ | $3.28–$3.46 | 2 |
| NM | $2.85 | 1 |
| NV | $2.95 | 1 |
| NY | $2.77–$3.80 | 5 |
| OH | $2.78 | 1 |
| OK | $2.65 | 1 |
| OR | $2.90–$3.22 | 2 |
| PA | $2.77–$3.18 | 2 |
| PR | $3.03 | 1 |
| RI | $3.06 | 1 |
| SC | $2.75 | 1 |
| SD | $2.78 | 1 |
| TN | $2.61 | 1 |
| TX | $2.74–$3.12 | 8 |
| UT | $2.81 | 1 |
| VA | $2.86–$3.52 | 2 |
| VI | $3.03 | 1 |
| VT | $2.81 | 1 |
| WA | $3.07–$3.55 | 2 |
| WI | $2.66 | 1 |
| WV | $2.80 | 1 |
| WY | $2.92 | 1 |
How the 89230 rate is calculated
Each of 89230’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 · 89230
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 0.00Practice expense 0.08Malpractice 0.01
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 89230
The CMS indicators that decide how 89230 is paid alongside other services.
CMS payment indicators · 89230
Sweat collection
| 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 | 3 | Technical component only. |
89230 compared with similar codes
Compare codes
89230 vs 82438 vs 89220: national Medicare rates
Swap in your local Medicare rate.
How to choose
89230 billing questions
Is 89230 the sweat chloride test itself?
No. It reports collecting the sweat specimen. The laboratory analysis, such as chloride measurement, is a separate service.
Can 89230 be reported with a sweat chloride assay?
Yes, when both the collection and the laboratory assay are performed and documented. CPT 82438 is used for chloride from a source other than blood.
Does 89230 include interpretation?
No. CMS identifies 89230 as technical-component-only and states that a separate code covers interpretation.
Should modifier TC be appended?
CMS classifies the code itself as technical-component-only. Report the separate interpretation service under its applicable code rather than treating 89230 as the interpretation.
What documentation supports reporting 89230?
Record the clinical reason for the sweat test, how the specimen was collected, and that it was obtained for laboratory analysis.
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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