Ji20874 - The question of timely is another struggle I didn't mention. -->I'm thinking that tying a NLT date into the billing language is appropriate, but concerns of recourse if/when NLT date gets busted. -->The rates would be per a unit of measure other than hours, more of a "production" type of structuring based on cost per code values (numerous codes, with significant variation in values). -->Yes, regarding customary - after posting the question here, I received information that the practice is the same in the commercial marketplace.
Retreadfed - (kudos to the screenname, reminds me of a few USAF COs from way back when) - Long response here -->The pricing would be per unit of measure. So, it's hard to explain here, or anywhere, but the service would "by procedure, each procedure being made up of 1 or more codes (no stated limit of how many codes, some could be 2, others 8 or even 12). Of those codes, a value is placed, could be 0.12, could be 7.7, could be 16.5. Each procedures is unique. -->The services are non-personal in nature. -->Clause not yet determined, but all indication is 52.232-32 will apply.