ASAM Criteria 4th Edition PHP (Level 2.5 / High-Intensity Outpatient): What Behavioral Health Operators Actually Need to Document and Bill
Partial Hospitalization sits at ASAM Level 2.5 in the 4th Edition, renamed High-Intensity Outpatient. Leah Kendall walks operators through the 20-hour threshold, CMS 42 CFR 410.43, Wit v. UBH fallout, and the state licensure overlays that drive PHP denials and recoupment.









