Insurance? Code number??? I'm not a rain man and

Insurance? Code number??? I'm not a rain man and I enjoy euphoria as much as the next guy, but out of ignorance, I have to ask some questions re: the code#. Is it possible that LL has been assigned a code # simply because it has actually been used in multiple hospital settings for the last several months?? Does it simply respond to hospital accounting needs? And as a counterpoint to my own question I then ask, why did LL not have a code# after multiple years of (non- hospital) HIV treatment in over 800 patients? Would a hospital/doc now be expected or able to use the code# for reimbursement and or expensing/accounting purposes? TIA.