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E666
E666 – Biliary tract manometry
OHIP Surgical Assists Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
This code represents the performance of biliary tract manometry as an additional procedure during an Endoscopic Retrograde Cholangiopancreatography (ERCP). It is intended to be billed as an add-on to a primary ERCP service. As per the note on (), E666 is payable with Z561 (ERCP with cannulation of common bile duct and/or pancreatic duct), Z558 (ERCP including sphincterotomy), or Z760 (ERCP through gastrojejunostomy).
When to Use
- Use E666 when performing sphincter of Oddi manometry during an ERCP to assess for sphincter of Oddi dysfunction in patients with unexplained biliary-type pain.
- Apply this code when manometric pressure measurements are obtained as a diagnostic adjunct during a primary procedure coded as Z561, Z558, or Z760.
Common Pitfalls
- Billing E666 as a standalone procedure will result in an automatic rejection, as it is strictly an add-on code that requires a primary ERCP service.
- Attempting to bill E666 with ERCP codes outside of the approved list (Z561, Z558, Z760) will trigger a claim rejection.
- Failure to document the manometry findings in the procedure report is a significant audit risk, as the code specifically covers the performance of the manometry, not just the intent.
Billing Tips
- Ensure the primary ERCP code (Z561, Z558, or Z760) is listed first on the claim to satisfy the add-on requirement for E666.
- If the manometry is performed during an after-hours emergency ERCP, apply the relevant E-series premiums (E409 or E410) to both the primary ERCP code and the E666 add-on code.
Provider Fee$52.30
Effective: April 1, 2025
Category
S. Digestive System Surgical Procedures
Subcategory
DIGESTIVE SYSTEM SURGICAL PROCEDURES
Service Type
Procedure
Code Classes
Digestive System Surgical Procedures
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