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E644
E644 – Radical mediastinal node dissection
OHIP Surgical Assists Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits
When to Use
- Use E644 when performing a radical mediastinal node dissection specifically following neoadjuvant chemotherapy or radiotherapy.
- Apply this code only as an add-on to primary procedures M142, M143, S089, or S090.
Common Pitfalls
- Billing E644 without explicit documentation of prior chemotherapy or radiotherapy will trigger a rejection during audit.
- Attempting to bill E644 as a standalone procedure is incorrect; it must be linked to an eligible primary surgical code on the same claim.
Billing Tips
- Ensure the primary procedure (M142, M143, S089, or S090) is billed on the same claim to avoid automatic denial of the add-on.
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