N106 – Cerebral vascular malformation - supratentorial
OHIP Otolaryngology Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
N106 is a surgical procedure for 'Cerebral vascular malformation - supratentorial' listed within the Neurological Surgical Procedures section of the OHIP Schedule of Benefits. As a surgical code, it is eligible for payment to the operating surgeon (suffix A), an assistant (suffix B), and an anaesthetist (suffix C). The specific requirements, definition, and constituent elements of this procedure are as outlined in the Schedule of Benefits. General rules for surgical procedures, assistant services, and anaesthesia services apply as outlined in the General Preamble.
When to Use
- Use N106 for the definitive surgical excision or resection of supratentorial arteriovenous malformations (AVMs) or cavernous malformations.
- Select N106 when performing craniotomy for the purpose of treating a vascular malformation located above the tentorium, distinguishing it from infratentorial procedures like N107.
Common Pitfalls
- Failing to append the E901 add-on code when an operating microscope is utilized, which is standard practice for this procedure and represents a significant missed fee.
- Billing N106 for endovascular embolization procedures, which are separately listed under different codes; N106 is strictly for open surgical intervention.
Billing Tips
- Always pair N106 with E901 to ensure the use of the operating microscope is captured, as the base fee for N106 does not automatically include this premium.
- Ensure the operative report clearly specifies the supratentorial location to support the use of N106 over infratentorial codes during potential Ministry audits.
Effective: April 1, 2026
X. Neurological Surgical Procedures
NEUROLOGICAL SURGICAL PROCEDURES
Surgical
Musculoskeletal System Surgical Procedures
All insured services must be documented in appropriate records.
The Act requires that the record establish that: 1. an insured service was provided; 2. the service for which the account is submitted is the service that was rendered; and 3. the service was medically necessary.
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