99080 is the Special Report code. In worker's comp there is a rate for the first page, and a rate for subsequent pages.
It will be very important what type of case you're billing, how you will get paid.
If the insurance company requested the report, be sure to attach a copy of the request, and a copy of the report with the billing.
When following up on any unpaid bills, if there's an adjuster, ask him/her "I'm calling to verify that you received the report regarding Mr. Smith". When they say yes, then you can hit them up for payment! It's a little sneaky, but if they did not get the report, they will not pay for it!