Can CMS provide a list of the revenue codes that are approved to be included in the outpatient hospital Upper Payment Limit (UPL) or conversely the revenue codes that cannot be included?

To date, CMS has not published a list of revenue codes that must be included or excluded from this service category.  Medicaid outpatient hospital services are defined at 42 Code of Federal Regulations (CFR) 440.20 and include “preventive, diagnostic, therapeutic, rehabilitative, or palliative services”.  In the state plan, states further define those services covered as outpatient hospital services.