CPT code 90853: Group psychotherapy, single-patient group session2026 Medicare rate & RVUs in Bartlett, Illinois
CPT 90853: $31.02–$31.02 office ($24.84–$24.98 facility) across 2 localities in Bartlett, IL in 2026 Medicare. Compare each area.
Medicare pays $31.02 for 90853 in the office in Bartlett, Illinois (Chicago, IL). 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 90853 pays more and less in Bartlett, Illinois
Bartlett, 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 |
|---|---|---|
| Chicago, IL | $31.02 | $24.98 |
| Suburban Chicago, IL | $31.02 | $24.84 |
How payment areas work in Bartlett
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.
- Chicago · Cook County
- Suburban Chicago · DuPage County, Kane County
City boundaries: 2026 Census geography · Census source · CMS county-to-locality definitions
How the 90853 rate is calculated
Each of 90853’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 · 90853
RVUs × geographic indexes × conversion factor
Work0.67
0.67 RVUs× 1.000 GPCI
Practice expense0.23
0.23 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.9100
Conversion factor
$33.4009
Medicare rate
$30.39
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 90853
90853 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.
Place of service · 90853
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
$30.39
- Non-facility (office)
- $30.39
- Facility
- $24.38
Higher because the practice carries its own overhead.
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 · Coming soon
Put 90853 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
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