Patient presents with suspected opioid overdose, manifesting as altered mental status, respiratory depression, and pinpoint pupils.  Onset of symptoms occurred approximately [time] after reported ingestion or injection of [substance, if known; otherwise, state "unknown opioid"].  History includes [past or current opioid use disorder, prescribed opioid medications, or suspected illicit opioid use].  Current vital signs are blood pressure [value], heart rate [value], respiratory rate [value], oxygen saturation [value], and temperature [value].  Naloxone [dosage] administered [route] at [time] with [response to naloxone, e.g., improved respirations, increased alertness].  Patient is exhibiting signs of opioid withdrawal including [list specific symptoms, e.g., diaphoresis, lacrimation, rhinorrhea, piloerection, myalgia, nausea, vomiting, diarrhea, anxiety, agitation].  Differential diagnosis includes opioid intoxication, sedative-hypnotic overdose, hypoglycemia, and stroke.  Laboratory tests ordered include complete blood count, comprehensive metabolic panel, urine drug screen, and serum toxicology.  Electrocardiogram performed revealing [findings].  Patient currently receiving supplemental oxygen via [method] at [rate] and intravenous fluids of [type] at [rate].  Continuous monitoring of respiratory status and cardiac rhythm initiated.  Treatment plan includes further naloxone administration as needed, supportive care, and consultation with addiction medicine specialist for opioid use disorder management and referral to appropriate treatment programs.  Patient's condition is currently [stable, unstable, critical] and requires continuous assessment for potential complications including aspiration pneumonia, pulmonary edema, and cardiac arrest.  Current ICD-10 code is T40.0X1A for poisoning by heroin, T40.0X4A for poisoning by other opioids, T40.1X1A poisoning by methadone or T40.2X1A poisoning by synthetic opioids, depending on specific substance involved.  CPT codes may include 90785 for therapeutic drug monitoring.  Medical necessity for continued hospitalization is being evaluated.