L868 – Special histochemistry for identification of microorganisms
OHIP Dermatology Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
As listed in the Schedule of Benefits under the Laboratory Medicine subcategory, L868 is for special histochemistry used for the identification of microorganisms. This is a special procedure and interpretation service for histology or cytology specimens.
When to Use
- Use L868 when performing specific histochemical stains, such as PAS or GMS, to visualize fungal elements or other microorganisms in tissue sections.
- Select L868 for special stains required to identify acid-fast bacilli or other bacteria that are not visible on standard H&E staining (L832).
Common Pitfalls
- Billing L868 alongside routine H&E staining (L832) without clear clinical justification for the additional special stain will trigger audit scrutiny.
- Submitting L868 for immunohistochemistry (IHC) markers is incorrect; IHC procedures must be billed under their specific respective codes rather than this histochemistry code.
Billing Tips
- Ensure the pathology report explicitly details the specific microorganism being investigated to justify the necessity of the special stain over standard histological examination.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Laboratory
Diagnostic and Therapeutic Procedures
All insured services must be documented in appropriate records. The Act requires that the record establish that: 1. an insured service was provided; 2. the service for which the account is submitted is the service that was rendered; and 3. the service was medically necessary.
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