Oth psychoactive substance use, unsp w unsp disorder

This code signifies a patient's problematic pattern of use of a psychoactive substance, other than alcohol, opioids, cannabis, sedatives, hypnotics, anxiolytics, stimulants, hallucinogens, or nicotine, where the specific substance is not identified. It also indicates the presence of a co-occurring mental or behavioral disorder directly caused by the substance use, but the specific induced disorder (e.g., psychosis, anxiety, mood disorder) is not specified.

This code is appropriate when documentation clearly indicates a substance use disorder involving a psychoactive substance not categorized elsewhere, and the specific substance is unknown or unidentifiable. It should also be used when there's an associated substance-induced mental health condition, but the precise nature of that condition is not documented. This code serves as a last resort when more specific substance use or induced disorder codes cannot be assigned due to insufficient information.

• Avoid using this code if the specific psychoactive substance (e.g., inhalants, other hallucinogens) is known; instead, use the more specific F18.xx or F16.xx codes.
• Do not use if the specific substance-induced disorder (e.g., F19.150 for substance-induced psychotic disorder with delusions) is documented.
• Always query the provider for more specific information regarding the substance and the induced disorder before assigning this unspecified code.