​​Thank you for your question on CMS506, Safe Use of Opioids - Concurrent Prescribing . The intent of the measure is to include all eligible patients and encounters typically reported as part of the Inpatient Quality Reporting program. The measure uses the value set "Encounter Inpatient" (2.16.840.1.113883.3.666.5.307) to identify patients with eligible encounters. If patients in the Inpatient Rehabilitation Facility (IRF) are eligible to be reported in the Inpatient Quality Reporting program and meet the initial patient population criteria for the Safe Use of Opioids by (1) having an eligible inpatient encounter and (2) being discharged with at least one opioid from the value set "Schedule II & III Opioid Medications" (2.16.840.1.113762.1.4.1111.165) or one benzodiazepine from value set "Schedule IV Benzodiazepines" (2.16.840.1.113762.1.4.1125.1), please include the IRF patients in the Safe Use of Opioids measure.