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Z350
Z350 – Endoscopic sphenoidotomy
OHIP Respiratory Surgical Procedures Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits
Endoscopic sphenoidotomy - unilateral is a surgical procedure to create an opening into the sphenoid sinus on one side using an endoscopic approach. This is classified as an Independent Operative Procedure (IOP) as indicated by the 'Z' prefix. As per the surgical preamble on page , specific rules apply to billing assessments with IOPs. A bilateral procedure can be claimed using the add-on code E843A. If a 3D CT/MRI image-guided system is used under specific circumstances, add-on code E845A is also payable.
Usage limits
[1, "per_anatomical_site", "per_patient_per_physician", "Unilateral procedure. See E843 for bilateral procedure."]
Note: E845A is only eligible for payment under the following circumstances: 1. Identification of the anatomy of the paranasal sinuses distorted by previous surgery, trauma, abnormalities of development or benign or malignant tumours; or 2. A pathological lesion abuts the base of the skull, orbit, optic nerve or carotid artery.
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