Billing code 36598Medicare rate & RVUs in Illinois
Compare 36598 physician payment amounts across CMS localities, including office and facility settings.
Medicare pays $109.43–$120.29 for 36598 in the office in 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 5 sections
Where 36598 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
4 payment localities
$109.43 to $120.29
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | $119.54 | $33.61 |
| East St. Louis | $111.11 | $32.44 |
| Rest Of Illinois | $109.43 | $31.36 |
| Suburban Chicago | $120.29 | $32.48 |
How the 36598 rate is calculated
Each of 36598’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 · 36598
RVUs × geographic indexes × conversion factor
Work0.72
0.72 RVUs× 1.000 GPCI
Practice expense2.68
2.68 RVUs× 1.000 GPCI
Malpractice0.07
0.07 RVUs× 1.000 GPCI
Adjusted RVUs
3.4700
Conversion factor
$33.4009
Medicare rate
$115.90
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 36598
The CMS indicators that decide how 36598 is paid alongside other services.
CMS payment indicators · 36598
Code 36598
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| 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 | 9 | The concept doesn’t apply. |
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
36598 without 50 · national office
$115.90
36598-50 · Bilateral: 150%
$173.85
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
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
Fee sheets
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