E100C – Attendance at delivery
OHIP Surgical Assists Code — OBSTETRICS · Schedule of Benefits
E100C is a time-based anaesthesia service for attendance at delivery. Time units are payable for the time spent in constant attendance at the delivery, exclusive of time spent engaged in any separately payable services except for P016C. As this service falls under the definition of general anaesthesia, the specific elements for general anaesthesia as defined on apply. Start and stop times must be recorded in the patient's permanent medical record.
When to Use
- Use E100C when providing constant anaesthesia attendance for a vaginal delivery or a complicated obstetric event where general anaesthesia standards are required.
- Use E100C when the anaesthesiologist is required to remain in constant attendance for a delivery that does not involve a surgical procedure code that would otherwise trigger a standard anaesthesia fee.
Common Pitfalls
- Billing E100C concurrently with other anaesthesia procedure codes (e.g., E007C or E012C) is prohibited, as E100C is intended for attendance where no other primary surgical anaesthesia fee applies.
- Failing to document precise start and stop times in the patient record is a primary cause for audit recovery, as the code is strictly time-based.
- Attempting to claim anaesthesia extra units from the GP97 list alongside E100C will result in rejection, as these are explicitly excluded for this specific code.
Billing Tips
- Ensure the claim includes the 4 basic units plus 1 unit for every 15 minutes of constant attendance, ensuring the total time matches the documented start and stop times in the chart.
- You may bill P016C (if applicable) in conjunction with E100C, but ensure all other separately payable anaesthesia services are excluded from the time calculation to avoid double-billing.
No fee information available.
K. Obstetrics
OBSTETRICS
Surgical
Anaesthesiologists' Services, Obstetrics
Start and stop times must be recorded in the patient's permanent medical record.
Female
Anaesthesia extra units listed on are not eligible for payment with E100C.
Time units for attendance at delivery are calculated as 4 basic units and 1 unit for each ¼ hour.
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.