Billing code 45389: ColonoscopyMedicare rate & RVUs in Ohio
Reports colonoscopic deployment of a stent across a colonic narrowing, commonly to relieve obstruction or maintain luminal patency.
CMS doesn’t publish an office rate for 45389 in Ohio.
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 9 sections
What 45389 covers
A therapeutic endoscopist advances a colonoscope to a narrowed segment and deploys a stent through the instrument to maintain or restore passage through the colon. A common setting is an obstructing colorectal tumor, where stenting may relieve symptoms or serve as a bridge to planned surgery. Gastroenterologists and colorectal surgeons typically perform the service in a hospital or ambulatory surgery center, with imaging support when needed to guide placement.
Select this service when the colonoscopic procedure includes stent deployment, not for diagnostic inspection alone or balloon dilation without a stent. The report should identify the site and cause of the narrowing, the stent placed, and how deployment was completed. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When related endoscopies are performed together, endoscopy family pricing applies. Modifier 50 is inappropriate; assistant-at-surgery payment is restricted, and co-surgeons and team surgery are not permitted.
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.
45389 in Ohio
| Payment locality | Office | Facility |
|---|---|---|
| Ohio | Unavailable | $247.84 |
How the 45389 rate is calculated
Each of 45389’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 · 45389
RVUs × geographic indexes × conversion factor
Work5.11
5.11 RVUs× 1.000 GPCI
Practice expense1.89
1.89 RVUs× 1.000 GPCI
Malpractice0.58
0.58 RVUs× 1.000 GPCI
Adjusted RVUs
7.5800
Conversion factor
$33.4009
Medicare rate
$253.18
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 45389
The CMS indicators that decide how 45389 is paid alongside other services.
CMS payment indicators · 45389
Colonoscopy
| 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 | 3 | Endoscopy family rules apply. |
| 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
45389 without 51 · national facility
$253.18
Colonoscopy
45389-51 · Second procedure: 50%
$126.59
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%).
45389 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 45347Sigmoidoscopy stenting
- Both involve endoscopic stent placement, but 45347 is for flexible sigmoidoscopy; 45389 is for colonoscopy.
- 45386Colonoscopy
- 45386 treats a colonic narrowing with balloon dilation. Choose 45389 when a stent is deployed through the colonoscope.
- 45378Colonoscopy
- 45378 is diagnostic colonoscopy without the therapeutic stent placement reported by 45389.
- 45393Colonic decompression
- 45393 reports colonoscopic decompression; 45389 reports placement of a stent across a narrowed colonic segment.
45389 billing questions
When should 45389 be selected instead of 45347?
Use 45389 for stent placement performed through a colonoscopy. Code 45347 describes stent placement using flexible sigmoidoscopy, when the service is limited to that examination.
Is balloon dilation reported separately when a stent is placed?
45389 represents colonoscopic stent placement. Review the operative details and applicable coding edits before separately reporting another therapeutic endoscopy performed during the same session.
Can diagnostic colonoscopy be separately reported with 45389?
The inspection needed to reach and treat the narrowing is part of the therapeutic colonoscopy. When related endoscopies are performed together, CMS endoscopy family pricing applies.
What documentation supports 45389?
Document the location and cause of the narrowing, the reason for stenting, and the stent deployment details, including the device and final position.
How does the 0-day global period affect same-day care?
Same-day preoperative and postoperative care is included in the procedure's 0-day global period.
Can an assistant or co-surgeon be reported?
CMS does not pay an assistant at surgery for this service. Co-surgeons and team surgery are not permitted.
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
Put 45389 and the rest of your codes on one sheet
Build a fee sheet from your own code list at your locality, put your payer contracts beside Medicare, and see what changed each quarter.
Build my fee sheetOr price your code list free →