E637 – Selective brushings of all 18 segmental bronchi for occult carcinoma in situ
OHIP Surgical Assists Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits
This service is an add-on to flexible or rigid bronchoscopy (`Z327). It covers the procedure of performing selective brushings of all 18 segmental bronchi to investigate for occult carcinoma in situ. A mandatory requirement for payment is that all collected specimens must be labeled according to their specific anatomical site of origin.
When to Use
- Use E637 when performing a comprehensive screening for occult carcinoma in situ in high-risk patients, such as those with positive sputum cytology but negative initial imaging.
- Apply this code when the procedure involves systematic, site-specific brushings of all 18 segmental bronchi during a standard bronchoscopy (Z327).
Common Pitfalls
- Billing E637 without documenting the specific anatomical site for each of the 18 collected specimens will trigger an automatic rejection or recovery during audit.
- Attempting to bill E637 as a standalone procedure is a common error; it must be submitted alongside Z327 to be considered valid.
Billing Tips
- Ensure your operative report explicitly lists the 18 segmental sites to substantiate the claim that the full protocol was completed as required by the fee schedule.
Effective: April 1, 2025
P. Respiratory Surgical Procedures
RESPIRATORY SURGICAL PROCEDURES
Procedure
Respiratory Surgical Procedures, Diagnostic and Therapeutic Procedures
Specimens labeled as to site
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