messed up therapy minutes

[Notthe1today]

We have a resident that received 2 therapies thru the ARD of the 30 day assessment, and placed in the RUB category. The next day (after the ARD) the resident Dc'd from OT.
When the bill was sent in they denied payment based on the fact that the resident was in a RUB category "more than 10 days, without two therapies." Should we have done an OMRA to lower the category between 8-10 days after OT dropped? And now what do we do, bill at the RUB for 10 days and then default rate until the next assessment b/c we did not do an OMRA?
Thanks