< Billing codes

Billing code

E686A

Extra abscess drainage site

Add to Z594 percutaneous abscess drainage for each other abdominal quadrant, or the pelvis, drained.

Watch for: Only with Z594; the pelvis counts only if the first abscess wasn't pelvic, and it isn't payable with S207.

Code

E686A

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 to percutaneous abscess drainage (Z594) for each other abdominal quadrant, or the pelvis, drained.

What it covers

E686 is added to Z594 for abscesses within each other abdominal quadrant, or the pelvis if the initial abscess was not in the pelvis (S35).

Billing rules

• Only with Z594 (S35).
• One for each other quadrant, or the pelvis if the first abscess was not pelvic (S35).
• Not payable with S207 appendectomy (S23).
• Marked #: premises, equipment, supplies and staff for the procedure are not included in the fee (SP1).

Often billed with

• Z594 percutaneous abdominal abscess drainage (S35).

Common rejections

• ADF: OHIP describes this as 'Corresponding procedure invalid, omitted or paid at zero': E686 was billed without a payable Z594 for the same patient and day.

Related codes: Z594, Z595, S314, S313

Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Abdomen, Peritoneum and Omentum, page S35.

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