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G256
G256 – Superior laryngeal nerve block
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
A diagnostic and therapeutic procedure involving the injection of the superior laryngeal nerve. This service includes all common elements of an insured service as defined in the Schedule of Benefits (see , ).
When to Use
- Use G256 for the diagnostic or therapeutic management of laryngeal pain or sensory dysfunction when the procedure is performed as a standalone service.
- Select G256 when performing a targeted superior laryngeal nerve block for patients with refractory cough or laryngeal hypersensitivity syndromes.
Common Pitfalls
- Billing G256 in conjunction with a primary surgical procedure performed by the same physician will result in a rejection, as the block is considered part of the surgical fee.
- Failure to append E958 when using sclerosing agents will result in a 50% underpayment of the procedure fee.
- Attempting to bill G256 alongside Z432C for anaesthesia support is prohibited; use E030C or E031C if sedation is required by a second physician.
Billing Tips
- Always pair G256 with an appropriate A-prefix assessment code when the service is non-elective to trigger eligibility for Special Visit Premiums.
- Ensure documentation clearly distinguishes the nerve block as a distinct therapeutic intervention rather than an incidental component of a larger surgical procedure to avoid audit scrutiny.
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