All codes
L421
L421 – L421
OHIP Dermatology Code · Schedule of Benefits
When to Use
- Use L421 for the laboratory requisition of a complete blood count (CBC) when performed as a standalone service.
- Use L421 when ordering a standard hematology panel that does not qualify for more specific, higher-value laboratory codes.
Common Pitfalls
- Billing L421 in conjunction with a visit fee (like A007) is often flagged if the laboratory work is not clearly distinct from the assessment provided.
- Submitting L421 for tests that are bundled into a global fee or specific diagnostic procedure codes will result in automatic rejection.
Billing Tips
- Ensure the laboratory requisition is clearly linked to the diagnostic necessity documented in the patient chart to avoid audit recovery.
Provider Fee$3.10
Effective: July 1, 2010
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