Per 42 CFR § 414.402, the lead item is the item in a product category with multiple items with the highest total nationwide Medicare allowed charges of any item in the product category prior to each competition. Changes in utilization and LCD revisions are not part of how CMS determines the lead item. Per 42 CFR § 414.402, the lead item is the item in a product category with multiple items with the highest total nationwide Medicare allowed charges of any item in the product category prior to each competition. Changes in utilization and LCD revisions are not part of how CMS determines the lead item.