Oth psychoactive substance use, unsp w anxiety disorder

This code signifies a patient's problematic pattern of use of a psychoactive substance, not otherwise specified, that has led to the development of an anxiety disorder. The anxiety symptoms are directly attributable to the substance use and would not otherwise be present. This diagnosis indicates that the specific psychoactive substance involved is unknown or not documented.

Apply this code when documentation clearly indicates a substance-induced anxiety disorder, but the specific psychoactive substance causing it is not identified. This is appropriate for cases where a clinician has diagnosed substance-induced anxiety, but the substance category (e.g., opioid, stimulant) is not specified. Supporting documentation would include a psychiatric evaluation noting anxiety symptoms directly linked to unspecified psychoactive substance use.

• Ensure the documentation explicitly states "unspecified" psychoactive substance use when linking to the anxiety disorder.
• Do not use this code if the specific psychoactive substance is known; instead, use the appropriate F1x.980 code for that substance.
• This code should be sequenced as the primary diagnosis if the substance-induced anxiety is the main reason for the encounter.