R803 – Thoraco-abdominal aneurysm - repair or excision with graft
OHIP Radiology Code — CARDIOVASCULAR SURGICAL PROCEDURES · Schedule of Benefits
Thoraco-abdominal aneurysm - repair or excision with graft. This is a surgical procedure on the arteries listed in the Cardiovascular Surgical Procedures section of the Schedule of Benefits. The fee for the assistant (suffix B) is calculated with 18 base units, and the fee for the anaesthetist (suffix C) is calculated with 30 base units, plus applicable time units for both.
When to Use
- Use R803 for open surgical repair or excision of a thoraco-abdominal aortic aneurysm involving the placement of a prosthetic graft.
- Select R803 instead of R799 or R800 when the procedure specifically involves the thoraco-abdominal segment rather than isolated abdominal or thoracic segments.
Common Pitfalls
- Billing R803 for endovascular aneurysm repair (EVAR) is a common error; endovascular procedures must be billed using the specific codes found in the endovascular section of the Schedule of Benefits.
- Failing to append the E667 add-on code when the procedure is performed for a ruptured aneurysm results in significant under-billing.
Billing Tips
- Ensure the surgical report clearly documents the extent of the thoraco-abdominal involvement to justify the use of R803 over more localized aneurysm repair codes.
Effective: April 1, 2026
Q. Cardiovascular Surgical Procedures
CARDIOVASCULAR SURGICAL PROCEDURES
Surgical
Cardiovascular Surgical Procedures
If the services of a second anaesthetist are required, the second anaesthetist is also permitted to claim R803C.
A second assistant's services are eligible for payment and do not require prior authorization from a medical consultant.
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