This might sound stupid, but give me a second
First- no judgement from me
Were you using the meds for a 'high', or did you have physical dependence or tolerance
d/t taking the pills for a while? This is an important distinction when you get to the time of having to check the box. Ask your addictionologist how he/she is coding this. If you had physical dependence/tolerance, it is a HUGE difference between that and addiction
I haven't heard of patients being outed by the pharmacy/drug insurance. I'm sure nothing is impossible with the variety of lousy judgment in the world, but that would be really weird.
If you have had physical tolerance/dependence, you don't have to check "yes" for substance ABUSE treatment. There are many classifications of meds that require increased dosage over time d/t dependence or tolerance, not just benzos or opiates (or street stuff, which isn't an issue here).