CPT code 45330: Flexible sigmoidoscopy, diagnostic2026 Medicare rate & RVUs in Barrington, Illinois
CPT 45330: $221.40–$223.35 office ($57.67–$59.27 facility) across 2 localities in Barrington, IL in 2026 Medicare. Compare each area.
Medicare pays $221.40–$223.35 for 45330 in the office in Barrington, Illinois, from Chicago, IL to Suburban 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 45330 pays more and less in Barrington, Illinois
Barrington, 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 | $221.40 | $59.27 |
| Suburban Chicago, IL | $223.35 | $57.67 |
How payment areas work in Barrington
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 · Lake County
City boundaries: 2026 Census geography · Census source · CMS county-to-locality definitions
How the 45330 rate is calculated
Each of 45330’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 · 45330
RVUs × geographic indexes × conversion factor
Work0.82
0.82 RVUs× 1.000 GPCI
Practice expense5.50
5.50 RVUs× 1.000 GPCI
Malpractice0.12
0.12 RVUs× 1.000 GPCI
Adjusted RVUs
6.4400
Conversion factor
$33.4009
Medicare rate
$215.10
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 45330
The CMS indicators that decide how 45330 is paid alongside other services.
CMS payment indicators · 45330
Flexible sigmoidoscopy, diagnostic
| 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) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
45330 without 51 · national office
$215.10
Flexible sigmoidoscopy, diagnostic
45330-51 · Second procedure: 50%
$107.55
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
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 45330 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
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