If you are diagnosed with hypersomnia, your doctor can prescribe various drugs to treat it, including stimulants, antidepressants, as well as several newer medications (for example, Provigil and Xyrem).
You may have your 2015 RMD made payable directly to the charity (provided it meets the IRS definition of a qualified charity), and then designate it as a qualified charitable distribution on your tax return. You'll have satisfied your distribution requirement, and you won't have to pay income taxes on that money.
If W-2 reporting of a per diem paid under an accountable plan is required, the substantiated portion of the per diem is listed separately from taxable income, under 'Misc. non-taxable'. Per diem payments made to employees under a non-accountable plan or paid under an accountable plan but not substantiated are included in Box 1 of the W-2 as taxable income.