Billing code 88331: Frozen sectionMedicare rate & RVUs in Minooka, Illinois
Compare Medicare physician payments in Minooka, IL. Census city boundaries cover Grundy County, Kendall County, Will County. Use the service ZIP to confirm the payment locality for a specific address.
Medicare pays $92.76–$99.79 for 88331 in the office in Minooka, Illinois, from Rest Of Illinois to Suburban Chicago. Which amount applies depends on the service address.
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 6 sections
Where 88331 pays more and less in Minooka, Illinois
Minooka, Illinois maps to 2 Medicare payment localities in our Census-to-CMS crosswalk. A city name alone doesn’t confirm an address’s payment area.
| Payment locality | Office | Facility |
|---|---|---|
| Rest Of Illinois | $92.76 | Unavailable |
| Suburban Chicago | $99.79 | Unavailable |
How payment areas work in Minooka
City limits and Medicare payment areas are different maps. These are the payment areas that cover the city’s counties; the service ZIP decides which one applies.
- Rest of Illinois · Grundy County, Kendall County
- Suburban Chicago · Will County
City boundaries: 2026 Census geography · Census source · CMS county-to-locality definitions
How the 88331 rate is calculated
Each of 88331’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 · 88331
RVUs × geographic indexes × conversion factor
Work1.16
1.16 RVUs× 1.000 GPCI
Practice expense1.72
1.72 RVUs× 1.000 GPCI
Malpractice0.03
0.03 RVUs× 1.000 GPCI
Adjusted RVUs
2.9100
Conversion factor
$33.4009
Medicare rate
$97.20
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 88331
The CMS indicators that decide how 88331 is paid alongside other services.
CMS payment indicators · 88331
Frozen section
| 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 | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
88331 without 26 · national office
$97.20
Frozen section
88331-26 · Professional component
$57.78
Pays only the interpretation and report.
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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