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N117
N117 – Craniotomy
OHIP Otolaryngology Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
Craniotomy
When to Use
- Use N117 for standard craniotomy procedures where no more specific code (such as N113 for craniotomy for aneurysm or N127 for craniotomy for tumor) applies.
- Select N117 when the surgical approach requires a formal craniotomy for intracranial access that does not fall under the defined scope of specialized neurosurgical codes.
Common Pitfalls
- Submitting N117 for procedures that have a more specific, higher-valued code, which leads to potential audit scrutiny for under-coding or inaccurate reporting.
- Attempting to bill for a second surgical assistant without prior authorization, as N117 is not on the pre-approved list for multiple assistants.
- Failing to document the specific surgical indication, which is critical when using a general procedural code like N117 to justify medical necessity.
Billing Tips
- Ensure that any applicable age-based fee premiums are calculated and applied correctly, as these are automatically eligible for N117 based on the patient's age at the time of service.
- If the procedure is performed after hours, verify the exact start time to determine if E409 or E410 applies, as these premiums significantly impact the total reimbursement for this high-value procedure.
Provider Fee$1,631.15
Surgical Assistant Fee$193.65
Anaesthetist Fee$239.40
Non-Anaesthetist Fee$239.40
Effective: April 1, 2026
Category
X. Neurological Surgical Procedures
Subcategory
NEUROLOGICAL SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Neurological Surgical Procedures
All insured services must be documented in appropriate records establishing that an insured service was provided, the service for which the account is submitted is the service that was rendered, and the service was medically necessary.
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