5B5A.1Z

ICD-11 MMS 2026-01

Wernicke-Korsakoff Syndrome, unspecified

Coding note

Chronic alcohol use may be associated with thiamine deficiency, but alcohol may also have effects on the brain via other mechanisms. This category should be used to describe cognitive symptoms due to chronic alcohol use if there is evidence of thiamine deficiency.

Exclusions from above levels

  • 6D72.10 – Amnestic disorder due to use of alcohol
  • 1C62.3Y – slim disease
  • 6B80 – Anorexia Nervosa
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  • DA96.0 – Intestinal malabsorption
  • NF07.0 – starvation
  • 18 – Pregnancy, childbirth or the puerperium
  • http://id.who.int/icd/entity/1004987305 – Transitory endocrine or metabolic disorders specific to fetus or newborn

Sibling codes

  • 5B5A.10 – Wernicke encephalopathy
  • 5B5A.11 – Korsakoff syndrome
  • 5B5A.1Y – Other specified Wernicke-Korsakoff Syndrome

Foundation entity

Wernicke-Korsakoff Syndrome – http://id.who.int/icd/entity/2017611840

Part of: 5B5A.1: Wernicke-Korsakoff Syndrome › 5B5A: Vitamin B1 deficiency › 05: Endocrine, nutritional or metabolic diseases