N201 – Rib graft cranioplasty
OHIP Otolaryngology Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
This code is for a surgical procedure on the musculoskeletal system, specifically a rib graft cranioplasty for a defect less than 7.5 cm. The fee payable to the surgeon (claimed with suffix A) is comprehensive and includes the pre-operative assessment that constitutes the decision for surgery, the surgical procedure itself, and normal post-operative care. Separate claims can be made for surgical assistance (suffix B) and anaesthesia (suffix C), which are calculated based on basic units and time units as outlined in the Schedule of Benefits.
When to Use
- Use N201 for the repair of a cranial defect smaller than 7.5 cm using a rib graft, as this code is specific to the size and graft material.
- Use N201 when performing a primary cranioplasty for post-traumatic or post-surgical defects that meet the size criteria, ensuring it is not billed alongside a consultation for the same decision-making visit.
Common Pitfalls
- Billing a hospital admission assessment or subsequent visit on the same day as N201 is a common audit trigger, as these are considered included in the surgical fee.
- Attempting to use N201 for defects 7.5 cm or larger will result in rejection or recovery, as this code is strictly limited to defects under 7.5 cm.
- Failure to document the specific size of the defect in the operative report can lead to claims being clawed back during a post-payment audit.
Billing Tips
- If the procedure is performed on a patient under 16 years of age who meets the Injury Severity Score (ISS) criteria, ensure the ISS is clearly documented in the record to support the E420 trauma premium.
- Always verify the start time of the procedure against the E409 or E410 criteria to ensure after-hours premiums are applied correctly to the surgeon's fee.
Effective: April 1, 2025
X. Neurological Surgical Procedures
NEUROLOGICAL SURGICAL PROCEDURES
Surgical
Musculoskeletal System Surgical Procedures
All insured services must be documented in appropriate records to 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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