All codes
L643
L643 – L643
OHIP Dermatology Code · Schedule of Benefits
When to Use
- Use L643 for the laboratory requisition of a complete blood count (CBC) when ordered as a standalone test or as part of a diagnostic workup.
- Apply this code when requesting a hemoglobin and hematocrit assessment to monitor anemia or response to iron therapy.
Common Pitfalls
- Billing L643 in conjunction with a visit code (e.g., A007) is acceptable, but ensure the laboratory requisition is clearly linked to the clinical diagnosis to avoid audit flags.
- Do not bill L643 if the test is performed within a hospital setting where the laboratory fee is already bundled into the facility global budget.
Billing Tips
- Ensure the diagnostic code on the requisition matches the diagnostic code submitted on your claim to prevent automated rejections.
Provider Fee$2.12
Effective: April 1, 2018
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