Final answer:
The percentage of covered lives for Zio xt depends on health insurance plan data, showing how many plans cover it as an in-network service relative to the total number of plans.
Step-by-step explanation:
Without additional context, it is difficult to provide a specific percentage without knowing the precise scope or context in which 'zio xt' is being referred to. Generally, when discussing network coverage for covered lives, this often pertains to the extent to which a healthcare provider or service is included within a health insurance plan's network of covered services.
The percentage of covered lives would indicate the proportion of individuals with insurance plans that include 'zio xt' as an in-network service.
To find this percentage, you would need access to insurance plan data and analyze the number of plans including 'zio xt' relative to the total number of plans.