All codes
Z129
Z129 – Simple, partial or complete, nail plate excision requiring anaesthesia - multiple
OHIP Psychiatric Code — INTEGUMENTARY SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
When to Use
- Use Z129 when performing a partial or complete excision of two or more nail plates during the same encounter, provided local or regional anaesthesia is required.
- Use Z129 for bilateral nail procedures or multiple digits on the same foot/hand, as it is the specific code for multiple nail plate excisions.
Common Pitfalls
- Billing Z129 multiple times for the same patient on the same day will result in rejections; it is a single-fee code regardless of the number of nails beyond the first.
- Attempting to bill Z129 alongside Z128 for the same patient is incorrect, as Z129 covers the entire procedure for multiple nails.
- Failing to document the necessity of anaesthesia can lead to audit recovery, as the code definition explicitly requires anaesthesia.
Billing Tips
- Always append E542 when performing this procedure in your office to capture the out-of-hospital procedural premium.
- If the patient is under 16, ensure the age-based surgical premium is applied to the base fee of Z129 to maximize the claim value.
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