What are the billing rules for E705A?

Payable only with Z491, Z492, Z493, Z494, Z495, Z496, Z497, Z498, Z499 or Z555 (S18). Only one of Z491, Z492, Z493, Z494, Z495, Z496, Z497, Z498, Z499 or Z555 is payable per patient per day (S17). Z580 flexible sigmoidoscopy is not payable with any of these colonoscopy codes for the same patient the same day (S15).

What is E705A often billed with?

The colonoscopy base code for the indication, for example Z555 (no symptoms or risk factors, 50+) or Z496 (signs or symptoms) (S16–S17). E749 when the colonoscopy is done in a private office, not in a hospital or ICHSC (S18–S19). Polypectomy codes Z571, Z518, Z517 or Z516 for the largest polyp, with E720, E520, E519 or E518 for up to 2 more (S19).

Why is E705A rejected?

ERF: The referring physician on the claim isn't currently eligible to refer, per OHIP's records; check the referring provider number before resubmitting. VJ7: The claim reached OHIP more than three months after the service date; resubmit as stale-dated only if it was first sent on time (VJ7 guide; GP9).

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Billing code

E705A — Colonoscopy to terminal ileum (add-on)

Q: What is OHIP billing code E705A?

Colonoscopy add-on when the scope is passed into the terminal ileum, billed with the colonoscopy code (Z491–Z499 or Z555).

Colonoscopy to terminal ileum

Add to a colonoscopy when the scope is passed into the terminal ileum.

Watch for: Only with Z491 to Z499 or Z555; one colonoscopy code per patient per day, and not with Z580.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$30.30	$0.00	$0.00	$0.00	$0.00

Code: E705A
Description: Colonoscopy to terminal ileum (add-on)
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

Colonoscopy add-on when the scope is passed into the terminal ileum, billed with the colonoscopy code (Z491–Z499 or Z555).

What it covers

E705 is an add-on to a colonoscopy when the scope is passed into the terminal ileum (S18).

The colonoscopy base codes (Z491–Z499, Z555) are each defined as 'sigmoid to descending colon' and differ by indication: screening, follow-up, symptoms, high risk and so on (S16–S17).

Billing rules

Payable only with Z491, Z492, Z493, Z494, Z495, Z496, Z497, Z498, Z499 or Z555 (S18).
Only one of Z491, Z492, Z493, Z494, Z495, Z496, Z497, Z498, Z499 or Z555 is payable per patient per day (S17).
Z580 flexible sigmoidoscopy is not payable with any of these colonoscopy codes for the same patient the same day (S15).
Marked '#': the fee doesn't include premises, equipment, supplies or staff, which are funded by the hospital budget or ICHSC facility costs; patients can't be charged for them (GP13).

Often billed with

The colonoscopy base code for the indication, for example Z555 (no symptoms or risk factors, 50+) or Z496 (signs or symptoms) (S16–S17).
E749 when the colonoscopy is done in a private office, not in a hospital or ICHSC (S18–S19).
Polypectomy codes Z571, Z518, Z517 or Z516 for the largest polyp, with E720, E520, E519 or E518 for up to 2 more (S19).
E717 biopsy or coagulation of angiodysplastic lesions, or E785 IBD surveillance biopsies, but not both (S18).

Common rejections

ERF: The referring physician on the claim isn't currently eligible to refer, per OHIP's records; check the referring provider number before resubmitting.
VJ7: The claim reached OHIP more than three months after the service date; resubmit as stale-dated only if it was first sent on time (VJ7 guide; GP9).

Related codes: Z555, Z496, Z497, Z499, E740, E741, E747, E749

Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Intestines (Except Rectum), Colonoscopy, page S18; base codes S16–S17.

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