Coding a negative sleep study

An NPSG or OCST with no evidence of sleep apnea, or an MSLT or MWT with no evidence of narcolepsy, hypersomnia - - --

What should the billable diagnosis be? There seems to be a conflict between the Compliance viewpoint (in the organization I work for) and the common sense approach. I don't seem to get a vote in this as I'm 'just the biller' !

Kinda frosts my onions, but I'm trying to learn everything I can when it comes to situations like this when those above my pay grade battle it out for intellectual superiority.

Any help or information that I can use to bolster my opinion would be most helpful.

Thanks

Coding a negative sleep study