F18.97 Inhalant use, unspecified with inhalant-induced persisting dementia

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Inhalant-induced major neurocognitive disorder

Applies from F18 Inhalant related disorders

Includes

• volatile solvents

Applies from F18.9 Inhalant use, unspecified

Excludes1 (never code together)

• inhalant abuse (F18.1-)
• inhalant dependence (F18.2-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 135 — Drug Use with Psychotic Complications
• CMS-HCC V22: HCC 54 — Drug/Alcohol Psychosis
• ESRD V24: HCC 54

MS-DRG index

Defines the logic of DRG(s) 894-897 in MDC 20.

Approximate ICD-9-CM (GEMs)

• 292.82 Drug-induced persisting dementia (approximate)

Code annotations containing back-references to F18.97

Back-references to F18.9

• Type 1 Excludes: F18.1 Inhalant abuse ("inhalant use, unspecified (F18.9-)")
• Type 1 Excludes: F18.2 Inhalant dependence ("inhalant use, unspecified (F18.9-)")

Back-references to F18

• Type 2 Excludes: F02 Dementia in other diseases classified elsewhere ("dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)")
• Type 2 Excludes: F06 Other mental disorders due to known physiological condition ("other mental disorders associated with alcohol and other psychoactive substances (F10-F19)")
• Type 2 Excludes: F06.0 Psychotic disorder with hallucinations due to known physiological condition ("hallucinations and perceptual disturbance induced by alcohol and other psychoactive substances (F10-F19 with .151, .251, .951)")
• Type 2 Excludes: F06.2 Psychotic disorder with delusions due to known physiological condition ("alcohol and drug-induced psychotic disorder (F10-F19 with .150, .250, .950)")
• Type 2 Excludes: F06.3 Mood disorder due to known physiological condition ("mood disorders due to alcohol and other psychoactive substances (F10-F19 with .14, .24, .94)")
• Type 2 Excludes: F06.4 Anxiety disorder due to known physiological condition ("anxiety disorders due to alcohol and other psychoactive substances (F10-F19 with .180, .280, .980)")
• Type 2 Excludes: F20 Schizophrenia ("psychoactive drug use (F11-F19 with .15. .25, .95)")
• Type 2 Excludes: F55 Abuse of non-psychoactive substances ("abuse of psychoactive substances (F10-F19)")
• Type 2 Excludes: F63 Impulse disorders ("habitual excessive use of alcohol or psychoactive substances (F10-F19)")
• Type 2 Excludes: F63.1 Pyromania ("alcohol or psychoactive substance intoxication (F10-F19)")
• Use Additional: O99.32 Drug use complicating pregnancy, childbirth, and the puerperium ("code(s) from F11-F16 and F18-F19 to identify manifestations of the drug use")
• Type 1 Excludes: R41.3 Other amnesia ("amnestic syndrome due to psychoactive substance use (F10-F19 with 5th character .6)")
• Type 1 Excludes: R44 Other symptoms and signs involving general sensations and perceptions ("hallucinations in drug psychosis (F11-F19 with fifth to sixth characters 51)")
• Type 2 Excludes: R78 Findings of drugs and other substances, not normally found in blood ("mental or behavioral disorders due to psychoactive substance use (F10-F19)")
• Use Additional: Z71.5 Drug abuse counseling and surveillance ("code for drug abuse or dependence (F11-F16, F18-F19)")
• Type 2 Excludes: Z79 Long term (current) drug therapy ("drug abuse and dependence (F11-F19)")

Diagnosis Index entries for F18.97

• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › inhalants
• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › psychoactive drug › inhalants
• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › volatile solvents
• Inhalant-induced › major neurocognitive disorder
• Use (of) › inhalants › with › persisting dementia

Nearby codes

• F18.94 Inhalant use, unspecified with inhalant-induced mood disorder
• F18.95 Inhalant use, unspecified with inhalant-induced psychotic disorder
• F18.950 Inhalant use, unspecified with inhalant-induced psychotic disorder with delusions
• F18.951 Inhalant use, unspecified with inhalant-induced psychotic disorder with hallucinations
• F18.959 Inhalant use, unspecified with inhalant-induced psychotic disorder, unspecified
• F18.97 Inhalant use, unspecified with inhalant-induced persisting dementia (this code)
• F18.98 Inhalant use, unspecified with other inhalant-induced disorders
• F18.980 Inhalant use, unspecified with inhalant-induced anxiety disorder
• F18.988 Inhalant use, unspecified with other inhalant-induced disorder
• F18.99 Inhalant use, unspecified with unspecified inhalant-induced disorder