With onset during withdrawai: This specifier applies if criteria are met for withdrawal from the substance and the symptoms develop during, or shortly after, withdrawal.
With onset after medication use: Symptoms may appear either at initiation of medi- cation or after a modification or change in use.
|CD-9-CM. The name of the substance/medication-induced anxiety disorder begins with the specific substance (e.g., cocaine, salbutamol) that is presumed to be causing the anxiety symptoms. The diagnostic code is selected from the table included in the criteria set, which is based on the drug class. For substances that do not fit into any of the classes (e.g., salbutamol), 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 un- known, the category ”unknown substance” should be used.
The name of the disorder is followed by the specification of onset (i.e., onset during in- toxication, onset during withdrawal, with onset during medication use). Unlike the record- ing procedures for ICD-lO-CM, which combine the substance-induced disorder 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 anxiety symptoms occurring dur- ing withdrawal in a man with a severe lorazepam use disorder, the diagnosis is 292.89 loraz- epam-induced anxiety disorder, with onset during withdrawal. An additional diagnosis of 304.10 severe lorazepam use disorder is also given. When more than one substance is judged to play a significant role in the development of anxiety symptoms, each should be listed sep- arately (e.g., 292.89 methylphenidate-induced anxiety disorder, with onset during intoxica- tion; 292.89 salbutamol-induced anxiety disorder, with onset after medication use).
|CD-10-CM. The name of the substance/medication-induced anxiety disorder begins with the specific substance (e.g., cocaine, salbutamol) that is presumed to be causing the anxiety symptoms. 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., salbutamol), 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.