Billing and Coding: GlycoMark® Testing for Glycemic Control

This guidance provides billing and coding instructions for GlycoMark® testing and complements LCD L36761; clinical coverage criteria are defined in that LCD. Claims must use CPT 84378 or 84999; ABN is not required for statutorily excluded services, voluntary ABNs use modifier GX, and statutorily excluded services must be indicated with modifier GY.

"No clinical coverage indications are specified in this billing/coding guidance; clinical coverage criteria for GlycoMark® testing are defined in Local Coverage Determination L36761."

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