How closely does the IRS monitor your bank accounts when you're in "Currently not collectible" status?

My $50K back tax debt to the IRS has been clified as "currently not collectible" for the past two years. I recently won a Disability settlement from Social Security and received a check for 4 1/2 years of back SS Disability payments (FYI: I am no longer disabled and am now working part-time). What I wanna know is, can I open a new bank account (I don't presently have one) and deposit the lump-sum SSA check without having some kind of alarm go off at IRS HQ which results in their hoovering that account dry the second it clears? I fully intend to use a big chunk of the money to work out some kind of payment or offer in comprimise plan with them, but I need to be able to use some of it for urgent medical, dental and other essential expenses (such as a good tax attorney) first. Any information and or suggestions would be greatly appreciated. Where possible, please cite references, regulations, IRS publications, etc. so I can make sure I have my facts straight.