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X231
X231 – CT Pelvis - without IV contrast
OHIP Laboratory Code — DIAGNOSTIC RADIOLOGY · Schedule of Benefits
This service is for a computed tomography (CT) scan of the pelvis without intravenous contrast. It includes all common and constituent elements of an insured service as described in the Schedule of Benefits (-14), such as obtaining history, maintaining records, and providing the premises and equipment.
When to Use
- Use X231 for non-contrast CT pelvis imaging when evaluating renal colic or urolithiasis where contrast is contraindicated or unnecessary.
- Use X231 for pelvic trauma or foreign body localization where baseline anatomy without enhancement is the primary diagnostic requirement.
Common Pitfalls
- Billing X231 in conjunction with X234 (CT colonography) is strictly prohibited as X234 is a distinct procedure with its own specific requirements.
- Attempting to bill X231 for studies that involve intravenous contrast administration, which instead requires the use of the appropriate contrast-enhanced code.
Billing Tips
- Ensure that age-based premiums are applied correctly to the base fee for pediatric patients, as these are calculated as a percentage increase on the procedural fee.
- If performing urgent interpretations via PACS for hospital patients after hours, ensure you meet the specific documentation and transmission timing requirements to qualify for E406, E407, or E408 premiums.
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