I am in Arizona and bill for a counselors office. I am wondering which code to use for a group therapy that is for substance and/or alcohol abuse. It is an intensive outpatient therapy but not all of the patients attending the group sessions meet the HCPCS requirement for the group (H0015; which requires 3hours a day at least 3 times a week). My question is, what would you code these patients? H0004-HQ..But that is for behavioral health (Can we consider substance abuse as behavioral health) or the CPT code 90853 (Group psychotherapy- Again, can we classify substance and/or alcohol abuse into this?). I am feeling very confused and would love input on what you would code for these services! Thank you!