CPT code 45337: Sigmoidoscopy2026 Medicare rate & RVUs in Wyoming
Flexible sigmoidoscopy with decompression is reported when an endoscopist relieves colonic distention, commonly during endoscopic management of sigmoid volvulus.
CMS doesn’t publish an office rate for 45337 in Wyoming.
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 45337 covers
A physician advances a flexible endoscope through the rectum into the distal colon to relieve distention, often in a patient with acute sigmoid volvulus. The endoscopist may use suction and endoscopic maneuvers to decompress the affected segment; a decompression tube may also be used when clinically indicated. Gastroenterologists and colorectal surgeons commonly perform this service in a hospital setting for an urgent obstruction-related presentation.
Report this code when the documented service includes therapeutic decompression, rather than inspection alone or another distinct intervention such as biopsy or bleeding control. The procedure note should support the indication, scope used, relevant findings, and decompression performed. The 0-day global period includes same-day preoperative and postoperative care. When related endoscopies are performed together, CMS endoscopy-family pricing applies. Modifier 50 is inappropriate for this service; assistant-at-surgery payment is restricted, and co-surgeon and team-surgery billing 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.
45337 in Wyoming**
| Payment locality | Office | Facility |
|---|---|---|
| Wyoming** | Unavailable | $97.78 |
How the 45337 rate is calculated
Each of 45337’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 · 45337
RVUs × geographic indexes × conversion factor
Work2.05
2.05 RVUs× 1.000 GPCI
Practice expense0.70
0.70 RVUs× 1.000 GPCI
Malpractice0.24
0.24 RVUs× 1.000 GPCI
Adjusted RVUs
2.9900
Conversion factor
$33.4009
Medicare rate
$99.87
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 45337
The CMS indicators that decide how 45337 is paid alongside other services.
CMS payment indicators · 45337
Sigmoidoscopy
| 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
45337 without 51 · national facility
$99.87
Sigmoidoscopy
45337-51 · Second procedure: 50%
$49.94
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%).
45337 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 45321Volvulus decompression
- Both describe endoscopic decompression, but 45321 is for rigid proctosigmoidoscopy. Select 45337 when a flexible sigmoidoscope is used.
- 45330Flexible sigmoidoscopy
- 45330 represents diagnostic flexible sigmoidoscopy. Choose 45337 when the procedure includes therapeutic decompression, not inspection alone.
- 45331Sigmoidoscopy
- 45331 is used when flexible sigmoidoscopy includes biopsy. Decompression, rather than tissue sampling, distinguishes 45337.
- 45334Flexible sigmoidoscopy
- 45334 describes endoscopic control of bleeding during flexible sigmoidoscopy. Use 45337 for decompression instead.
45337 billing questions
Can a biopsy or bleeding-control service be reported in the same session?
A separately performed intervention must be supported by the procedure documentation. When related endoscopies are performed together, CMS endoscopy-family pricing applies.
Can modifier 50 be appended?
No. The descriptor and anatomy make bilateral reporting with modifier 50 inappropriate.
Is assistant-at-surgery payment available?
No. CMS applies a statutory restriction to assistant-at-surgery payment for this code; co-surgeons and team surgery are also not permitted.
What same-day care is included in the global period?
The 0-day global period includes same-day preoperative and postoperative care.
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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