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M085
M085 – Arytenoidectomy, arytenoidopexy, or lateralization procedure
OHIP Ophthalmology Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits
Arytenoidectomy or arytenoidopexy or lateralization procedure is a surgical procedure on the larynx. Payment for this service is calculated based on a base unit value plus time units for both the anaesthetist and the surgical assistant. The anaesthetist is allocated 8 base units, and the surgical assistant is allocated 6 base units. The fee for the surgeon includes pre-operative and post-operative care, with specific exceptions as detailed in the Surgical Preamble (see ).
When to Use
- Use M085 for definitive surgical management of unilateral vocal cord paralysis via arytenoidectomy or arytenoidopexy to improve airway patency.
- Use M085 for lateralization procedures intended to widen the glottic aperture in patients with bilateral vocal cord paralysis.
Common Pitfalls
- Billing M085 alongside other laryngeal procedures (e.g., M081, M082) without applying the 85% reduction rule for multiple procedures performed under the same anaesthesia.
- Failing to document the specific surgical technique used, which can lead to audit scrutiny if the procedure is later re-classified as a less complex endoscopic assessment or biopsy.
Billing Tips
- Ensure the anaesthetist and surgical assistant claim their respective base units (8 and 6) on the same claim submission to avoid reconciliation delays.
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