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L492
L492 – Crossmatch per unit of blood
OHIP Laboratory Medicine Code · Schedule of Benefits
Crossmatch per unit of blood. Listed under 2.5 Immunohematology in the Schedule of Benefits for Laboratory Services (effective April 1, 2026). [Essential Specifications 26] d. L492 Crossmatch. When an initial crossmatch is requested, the appropriate claim is for L490 x 1, L482 x 1 plus L492 for each unit ordered. L490 and L482 may not be claimed more than once on the same day of service. L490 and L493 may not be claimed when these procedures are carried out as a confirmatory test on the units of blood to be transfused.
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