For the 802 mental illness is depression, bipolar, schizoid... or other mental illness (anxiety) and you write MI. The intellectual disability/developmental disability portion is easier because you should know exactly who these patients are. The coding on the 802 has little to do with your QM per se. You can check items on the form that are relevant one the day of entry only. As an aside the ID/DD patients must be marked on the 672 on line 108. The patients marked there better have a PASSAR level 2 on file. The surveyors are only going to drill down on your 802 if they start seriously hen pecking. They have an 802. They know what is going on for your QM. The reason you do an 802 is you can show them you know your building. It doesn't have to be perfect, if after survey starts you see a problem you just tell them and fix it within the first 24 hours.. The 672 is where is counts to be correct. That is where the rubber meets the road for survey.