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Billing code

E641A — Sigmoidoscopy – endoscopic placement of stent in rectum

Rectal stent placement

Add for endoscopic placement of a stent in the rectum during sigmoidoscopy.

Watch for: Must be billed with a sigmoidoscopy code (Z535, Z536 or Z592) on the same claim.

Code

E641A

Description

Sigmoidoscopy – endoscopic placement of stent in rectum

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Apr 1, 2025

Termination date

No end date

Explanation

Updated October 26, 2026

Add-on for endoscopic placement of a stent in the rectum during sigmoidoscopy.

What it covers

E641 is endoscopic placement of a stent in the rectum, listed as an add-on under sigmoidoscopy with or without anoscopy (S25).

Billing rules

• Add-on under the sigmoidoscopy listings (Z535, Z536, Z592) (S25).
• Marked #: premises, equipment, supplies and staff are funded by the hospital budget or ICHSC facility costs, and patients can't be charged for them (GP13).
• Under-16 age premiums (10–30%) apply to surgical procedures in Parts K to Z (GP64).

Often billed with

• A sigmoidoscopy code (S25).

Common rejections

• ADF: OHIP describes this as 'Corresponding Procedure Invalid, Omitted or Paid at zero': the base procedure (sigmoidoscopy code) is missing from the claim, invalid, or paid at zero. Add-ons are payable only with their base code.

Related codes: E630, E629, Z535, Z536, Z592

Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Rectum, page S25.

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