No Device OS information is included in the billing report generated by usage_metering 9.2x
Any version after usage_metering 9.0
No, Billing report generated by the usage_metering probe (after version 9.0) or billing probe does not include OS information in the report.
However, Export Inventory/Export Group is available from USM via Actions Menu:
Navigate in USM
The exported inventory will including OS information.
Equivalently create the statement to query below tables:
to generate a custom report.