DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

F04 diagnosis code · Billable category · FY2027

F04 Amnestic disorder due to known physiological condition

  • Billable
  • Not CC/MCC
  • POA reported

F04 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F01-F09 Mental disorders due to known physiological conditions (F01-F09)
  3. F04 Amnestic disorder due to known physiological condition
CC / MCC
Neither
MS-DRG
884
HCC V28
–
POA
Reported
Code Editor
–
Index entries
12

Instructions

At F04

Inclusion terms

  • Korsakov's psychosis or syndrome, nonalcoholic

Excludes1

  • amnesia NOS (R41.3) R41.3
  • anterograde amnesia (R41.1) R41.1
  • dissociative amnesia (F44.0) F44.0
  • retrograde amnesia (R41.2) R41.2

Excludes2

  • alcohol-induced or unspecified Korsakov's syndrome (F10.26, F10.96) F10.26 F10.96
  • Korsakov's syndrome induced by other psychoactive substances (F13.26, F13.96, F19.16, F19.26, F19.96) F13.26 F13.96 F19.16 F19.26 F19.96

Code first

  • the underlying physiological condition

Notes that also apply

Block F01-F09 instructions (Notes 1): printed on the block page.

Chapter 5 instructions (Includes 1, Excludes2 1): printed on the chapter 5 page.

Index entries

  • Amnes (t)ic syndrome (post-traumatic) → F04
  • Meynert's amentia (nonalcoholic) → F04
  • Toxemica cerebropathia psychica (nonalcoholic) → F04
  • AmentiaMeynert's (nonalcoholic) → F04
  • Disease, diseasedKorsakoff's (nonalcoholic) → F04
  • Korsakoff's (Wernicke) disease, psychosis or syndrome (alcoholic)nonalcoholic → F04
  • Psychosis, psychoticKorsakoff's, Korsakov's, Korsakow's (nonalcoholic) → F04
  • SyndromeKorsakoff (-Wernicke) (nonalcoholic) → F04
  • SyndromeWernicke-Korsakoff (nonalcoholic) → F04
  • Wernicke-Korsakoff's syndrome or psychosis (alcoholic)nonalcoholic → F04
  • Disorder (of)amnesic, amnesticdue to (secondary to) general medical condition → F04
  • Syndromeorganicamnesic (not alcohol- or drug-induced) → F04

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for F04
CC / MCCNeither
Appendix BMDC 19 Mental Diseases and Disorders, MS-DRG 884 (Organic Disturbances and Intellectual Disability…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy