Oth psychoactive substance abuse w persisting dementia

This code signifies a pattern of harmful use of a psychoactive substance (other than alcohol, opioids, cannabis, sedatives/hypnotics, cocaine, stimulants, hallucinogens, or other specified psychoactive substances) that has led to the development of a persistent dementia. The dementia is directly attributable to the chronic or heavy use of the unspecified psychoactive substance, causing significant cognitive decline.

Apply this code when documentation clearly indicates a patient's cognitive impairment, specifically dementia, is a direct consequence of the abuse of a psychoactive substance not otherwise classified. This diagnosis requires evidence of both substance abuse (e.g., recurrent use leading to failure to fulfill major role obligations, hazardous use, legal problems, social/interpersonal problems) and a diagnosed dementia with a clear causal link to the substance use.

• Ensure the documentation specifies "abuse" rather than "dependence" for the unspecified psychoactive substance.
• Verify that the dementia is explicitly stated as "persisting" and "substance-induced" to differentiate from other forms of dementia.
• Always code the specific psychoactive substance if known, using a more specific F1x.17 code (e.g., F13.17 for sedative abuse with persisting dementia). This code is for "other" or "unspecified" psychoactive substances.