What is OHIP billing code Z110?

Z110 is "Extensive debridement of onychogryphotic nail involving removal of multiple laminae", an OHIP Psychiatric code from the Ontario Schedule of Benefits (Physician Services).

How much does Z110 pay?

The current OHIP fee for Z110 is $19.15, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill Z110 to OHIP?

Z110 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates Z110 claims against the Schedule of Benefits rules before submission.

All codes

Z110

Z110 – Extensive debridement of onychogryphotic nail involving removal of multiple laminae

OHIP Psychiatric Code — INTEGUMENTARY SYSTEM SURGICAL PROCEDURES · Schedule of Benefits

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Extensive debridement of onychogryphotic nail involving the removal of multiple laminae. This procedure is distinct from simple trimming or clipping of nails, which is not an insured service. The service must be rendered personally by the physician to be eligible for payment.

When to Use

Use Z110 for the management of severely dystrophic, thickened, or ram's horn nails (onychogryphosis) that require mechanical debridement of multiple layers of keratinous debris.
Use this code when the clinical presentation necessitates significant thinning or reduction of the nail plate to alleviate pain or prevent secondary infection, distinguishing it from routine nail care.

Common Pitfalls

Billing Z110 for routine nail clipping or trimming, which is considered non-insured maintenance and will be rejected or clawed back during an audit.
Failing to document the specific pathology of the nail (e.g., onychogryphosis) and the extent of the debridement, which is required to justify the surgical fee over a standard office visit.
Attempting to bill Z110 in conjunction with a general assessment code (A007) for the same encounter without clear evidence of a separate, distinct clinical issue addressed during the visit.

Billing Tips

Ensure your clinical notes explicitly describe the removal of 'multiple laminae' or 'extensive debridement' to substantiate the surgical nature of the procedure.
If multiple nails are treated, document the specific digits involved to support the claim, though note that Z110 is typically billed per procedure rather than per nail.

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Provider Fee$19.15

Effective: April 1, 2026

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