Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Hospital inpatient/24-hour hospital inpatient; Hospital inpatient treatment; Psychiatric hospital; Buprenorphine used in Treatment; Naltrexone used in Treatment; Prescribes buprenorphine; Prescribes naltrexone; Relapse prevention with naltrexone; Use methadone/buprenorphine for pain management or emergency dosing; Acamprosate (Campral®); Buprenorphine with naloxone; Buprenorphine without naloxone; Naltrexone (oral); Naltrexone (extended-release, injectable); Medications for HIV treatment; Medications for Hepatitis C treatment; Lofexidine; Clonidine; Medication for mental disorders; Nicotine replacement; Non-nicotine smoking/tobacco cessation; State government; State Substance use treatment agency; State mental health department; State department of health; Hospital licensing authority; The Joint Commission; Federal, or any government funding for substance use treatment programs; Medicare; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; State-financed health insurance plan other than Medicaid; Adolescents; Young adults; Adult women; Adult men; Clients with co-occurring mental and substance use disorders; Clients with co-occurring pain and substance use disorders; Clients who have experienced trauma; Comprehensive mental health assessment; Comprehensive substance use assessment; Complete medical history/physical exam; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Breathalyzer or blood alcohol testing; Drug and alcohol oral fluid testing; Drug or alcohol urine screening; HIV testing; STD testing; TB screening; Testing for Hepatitis B (HBV); Testing for Hepatitis C (HCV); Discharge Planning; Naloxone and overdose education; Self-help groups; Housing services; Assistance with obtaining social services; Mentoring/peer support; Employment counseling or training; Treatment for gambling disorder; Treatment for other addiction disorder; HIV or AIDS education, counseling, or support; Hepatitis education, counseling, or support; Health education services other than HIV/AIDS or hepatitis; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Individual counseling; Group counseling; Hepatitis A (HAV) vaccination; Hepatitis B (HBV) vaccination; Smoking not permitted; Female; Male; Sign language services for the deaf and hard of hearing; Case management service; Domestic violence services, including family or partner; Early intervention for HIV; Mental health services; Social skills development; Integrated primary care services; Suicide prevention services