MB21

ICD-11 MMS 2026-01

Symptoms, signs or clinical findings involving cognition

Description

Symptoms, signs, and clinical findings indicative of a disturbance in mental abilities and processes related to attention, memory, judgment, reasoning, problem solving, decision making, or comprehension, or the integration of these functions.

Exclusions from above levels

  • 19 – Certain conditions originating in the perinatal period
  • JA66 – Clinical findings on antenatal screening of mother

Child codes

  • MB21.0 – Age-associated cognitive decline
  • MB21.1 – Amnesia
  • MB21.2 – Anosognosia
  • MB21.3 – Confabulation
  • MB21.4 – Disorientation
  • MB21.5 – Distractibility
  • MB21.6 – Impaired abstract thinking
  • MB21.7 – Impaired executive functioning
  • MB21.8 – Impaired judgment
  • MB21.9 – Perseveration
  • MB21.A – Poor concentration
  • MB21.B – Racing thoughts
  • MB21.Y – Other specified symptoms, signs or clinical findings involving cognition
  • MB21.Z – Symptoms, signs or clinical findings involving cognition, unspecified

Foundation children elsewhere

  • MB4B – Symbolic dysfunctions

Sibling codes

  • MB20 – Symptoms, signs or clinical findings involving consciousness
  • MB22 – Symptoms or signs involving motivation or energy
  • MB23 – Symptoms or signs involving appearance or behaviour
  • MB24 – Symptoms or signs involving mood or affect
  • MB25 – Symptoms or signs involving form of thought
  • MB26 – Symptoms or signs involving content of thought
  • MB27 – Symptoms or signs involving perceptual disturbance
  • MB28 – Symptoms or signs related to personality features
  • MB29 – Symptoms or signs involving eating and related behaviour
  • MB2A – Symptoms or signs involving elimination
  • MB2Y – Other specified mental or behavioural symptoms, signs or clinical findings

Foundation entity

Symptoms, signs or clinical findings involving cognition – http://id.who.int/icd/entity/1282135070

Part of: 21: Symptoms, signs or clinical findings, not elsewhere classified