F04 Amnestic disorder due to known physiological condition

✓ Billable HCC RxHCC ⓘ ICD-10-CM 2026

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The ICD-10-CM code for Amnestic disorder due to known physiological condition is F04 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
F01-F09: Mental disorders due to known physiological conditions (F01-F09)
Category F04
1 code (1 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F04:

  • Toxemica cerebropathia psychica (nonalcoholic)
  • Meynert's amentia (nonalcoholic)
  • Amnes (t)ic syndrome (post-traumatic)
  • Syndrome › Korsakoff (-Wernicke) (nonalcoholic)
  • Disease, diseased › Korsakoff's (nonalcoholic)
  • Wernicke-Korsakoff's syndrome or psychosis (alcoholic) › nonalcoholic
  • Psychosis, psychotic › Korsakoff's, Korsakov's, Korsakow's (nonalcoholic)
  • Korsakoff's (Wernicke) disease, psychosis or syndrome (alcoholic) › nonalcoholic
Excludes1
Not coded here. These conditions should NOT be coded together with F04.
  • amnesia NOS (R41.3)
  • anterograde amnesia (R41.1)
  • dissociative amnesia (F44.0)
  • retrograde amnesia (R41.2)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • alcohol-induced or unspecified Korsakov's syndrome (F10.26, F10.96)
  • Korsakov's syndrome induced by other psychoactive substances (F13.26, F13.96, F19.16, F19.26, F19.96)
Code First
  • the underlying physiological condition

Inclusion Terms

  • Korsakov's psychosis or syndrome, nonalcoholic

U.S. Hospital Utilization

  • An estimated 1,675 U.S. inpatient stays in 2023 included F04 among the documented diagnoses.
  • 115 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a
Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference F04 with the canonical source and edition:

F04 — Amnestic disorder due to known physiological condition. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/F04

Canonical URL: https://icd10codingpro.com/codes/F04

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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