All codes
N166
N166 – Lateral canthal advancement - two surgeons, lesser portion
OHIP Otolaryngology Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
Represents a surgical procedure performed on the neurological system. The service includes all pre-operative and post-operative care as defined in the Schedule of Benefits. Payment is subject to the general rules outlined in the General Preamble. This service can be billed by the surgeon (suffix A), an assistant (suffix B), or an anaesthesiologist (suffix C).
When to Use
- Use N166 when you are the secondary surgeon performing a lateral canthal advancement in a two-surgeon team, where the primary surgeon bills the major portion code.
- Use this code specifically for the lesser portion of a multi-surgeon neurological procedure involving lateral canthal advancement, ensuring the primary surgeon's code is billed on the same claim.
Common Pitfalls
- Billing N166 as the primary surgeon will result in an automatic rejection; ensure the primary surgeon's code is present on the claim to justify the 'lesser portion' designation.
- Failing to document the specific role and the necessity of two surgeons in the operative report can lead to audit recovery, as the Ministry requires justification for multi-surgeon billing.
Billing Tips
- Always link the N166 claim to the primary surgeon's procedure code to prevent 'invalid service code' rejections during the Ministry's claim validation process.
Provider Fee$345.35
Surgical Assistant Fee$187.65
Effective: April 1, 2025
Since Apr 2004, this fee has increased 0.0% vs 57.0% CPI inflation
Category
X. Neurological Surgical Procedures
Subcategory
NEUROLOGICAL SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Musculoskeletal System Surgical Procedures
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.