What is OHIP billing code Z603?

Z603 is "Catheterization - home", an OHIP Psychiatric code from the Ontario Schedule of Benefits (Physician Services).

How much does Z603 pay?

The current OHIP fee for Z603 is $16.25, effective 2025-04-01, per the Ontario Schedule of Benefits.

How do I bill Z603 to OHIP?

Z603 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates Z603 claims against the Schedule of Benefits rules before submission.

What codes are related to Z603?

Codes related to Z603 in the Schedule of Benefits include Z602, Z611, Z608, Z610.

All codes

Z603

Z603 – Catheterization - home

OHIP Psychiatric Code — UROGENITAL AND URINARY SURGICAL PROCEDURES · Schedule of Benefits

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This service is for catheterization rendered in a patient's home. It is only payable for specific indications, including acute retention, change of a Foley catheter or suprapubic tube, or for the instillation of medication. Per the note on , this service must be rendered personally by the physician and cannot be delegated. It is not eligible for payment in addition to Z610.

When to Use

Use Z603 for the urgent management of acute urinary retention requiring immediate catheterization in a patient's home.
Use Z603 for the routine or urgent replacement of an existing Foley or suprapubic catheter when performed personally by the physician in the home setting.
Use Z603 when performing the therapeutic instillation of medication directly into the bladder via a catheter in a home environment.

Common Pitfalls

Billing Z603 in addition to Z610 is strictly prohibited; these codes are mutually exclusive for the same service event.
Delegating the catheterization procedure to a nurse or other staff member will result in a clawback, as the OHIP schedule explicitly requires the physician to render this service personally.
Billing Z603 for non-indicated reasons, such as routine assessments that do not involve the specific catheter procedures listed in the schedule, will lead to claim rejection.

Billing Tips

Ensure you append the appropriate Special Visit Premium (e.g., B992 or B994) if the home visit meets the criteria for a non-elective, physician-initiated visit, as Z603 only covers the procedure fee itself.
Document the specific clinical indication (e.g., 'acute retention' or 'Foley change') clearly in the patient record to justify the use of Z603 over a standard home visit code.

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Provider Fee$16.25

Effective: April 1, 2025

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