Categorization for Buprenorphine Source Prior to Treatment Entry	Parameters for Coding	Example Language
Non-Prescribed Buprenorphine, NPB (i.e. diverted or illicit buprenorphine)	-Identify any language with references to generic buprenorphine mono or combo product or a trade name, typically a version of Suboxone (Subs, Subx, etc.) -Code for documentation of buying, trading, or informally receiving buprenorphine on the street prior to entering treatment	"was able to get street bupe," "getting illicit Suboxone," "has been buying street Subx," “About 2 months ago started using street suboxone - anywhere between 4 mg and 8 mg daily"
Prescribed buprenorphine	Documentation of a care transfer, outside prescriber, or detoxification discharge	“patient recently moved from [town], had been attending [OBOT program] for two years,” “patient discharged from inpatient admission last week on bup/nal 16/4mg”
Unknown	No documentation regarding source of buprenorphine (i.e. no mention whatsoever) or vague and/or conflicting explanations which are indeterminate	“solely on Suboxone since last year,” “24 hours since last use of Suboxone,” "Last buprenorphine use a few days ago"