F04 vs F19.26
F04 (Amnestic disorder due to known physiological condition) compared with F19.26 (Other psychoactive substance dependence with psychoactive substance-induced persisting amnestic disorder), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. F04 carries an Excludes2 note covering F19.26: “Korsakov's syndrome induced by other psychoactive substances (F13.26, F13.96, F19.16, F19.26, F19.96)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F04Amnestic disorder due to known physiological condition | F19.26Other psychoactive substance dependence with psychoactive substance-induced persisting amnestic disorder | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Amnestic disorder due to known physiological condition is a billable ICD-10-CM diagnosis code (F04). | Other psychoactive substance dependence with psychoactive substance-induced persisting amnestic disorder is a billable ICD-10-CM diagnosis code (F19.26). |
| Includes | Korsakov's psychosis or syndrome, nonalcoholic | polysubstance drug use (indiscriminate drug use) |
| Code first | the underlying physiological condition | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources