The name of the disorder is followed by the course (i.e., acute, persistent), followed by the specifier indicating level of psychomotor activity (i.e., hyperactive, hypoactive, mixed level of activity). Unlike the recording procedures for ICD-lO-CM, which combine the sub- stance/medication intoxication delirium and substance use disorder into a single code, for
ICD-9-CM a separate diagnostic code is given for the substance use disorder. For example, in the case of acute hyperactive intoxication delirium occurring in a man with a severe co- caine use disorder, the diagnosis is 292.81 cocaine intoxication delirium, acute, hyperac- tive. An additional diagnosis of 304.20 severe cocaine use disorder is also given. If the intoxication delirium occurs without a comorbid substance use disorder (e.g., after a one- time heavy use of the substance), no accompanying substance use disorder is noted (e.g., 292.81 phencyclidine intoxication delirium, acute, hypoactive).
I CD-10-CM . The name of the substance/ medication intoxication delirium begins with the specific substance (e.g., cocaine, dexamethasone) that is presumed to be causing the delirium.
The diagnostic code is selected from the table included in the criteria set, which is based on the drug class and presence or absence of a comorbid substance use disorder. For substances that do not fit into any of the classes (e.g., dexamethasone), the code for ”other substance” should be used; and in cases in which a substance is judged to be an etiological factor but the specific class of substance is unknown, the category ”unknown substance” should be used.
When recording the name of the disorder, the comorbid substance use disorder (if any) is listed first, followed by the word ”with,” followed by the name of the substance intoxication delirium, followed by the course (i.e., acute, persistent), followed by the specifier indicating level of psychomotor activity (i.e., hyperactive, hypoactive, mixed level of activity). For exam- ple, in the case of acute hyperactive intoxication delirium occurring in a man with a severe c0- caine use disorder, the diagnosis is F14.221 severe cocaine use disorder with cocaine intoxication delirium, acute, hyperactive. A separate diagnosis of the comorbid severe cocaine use disorder is not given. If the intoxication delirium occurs without a comorbid substance use disorder (e.g., after a one-time heavy use of the substance), no accompanying substance use disorder is noted (e.g., F16.921 phencyclidine intoxication delirium, acute, hypoactive).
ICD-9-CM. The name of the substance/medication withdrawal delirium begins with the specific substance (e.g., alcohol) that is presumed to be causing the withdrawal delirium. The diagnostic code is selected from substance—specific codes included in the coding note included in the criteria set. The name of the disorder is followed by the course (i.e., acute, persistent), fol- lowed by the specifier indicating level of psychomotor activity (i.e., hyperactive, hypoactive, mixed level of activity). Unlike the recording procedures for ICD-IOCM, which combine the substance/medication withdrawal delirium and substance use disorder into a single code, for
ICD—9—CM a separate diagnostic code is given for the substance use disorder. For example, in the case of acute hyperactive withdrawal delirium occurring in a man with a severe alcohol use disorder, the diagnosis is 291.0 alcohol withdrawal delirium, acute, hyperactive. An additional diagnosis of 303.90 severe alcohol use disorder is also given.