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. [1]

Subcategories

• MB21.0 Age-associated cognitive decline

  A normative (non-pathological) deterioration of higher cortical functions such as thinking, reasoning, comprehension, calculation, learning, language, and judgment. [1]

• MB21.1 Amnesia

  An inability to recall past experiences, especially where recall is to be expected. [1]

• MB21.2 Anosognosia

  A lack of awareness or failure to recognize one's own illness, symptoms, or functional deficits, considered to be an aspect of the illness. [1]

• MB21.3 Confabulation

  The filling of memory gaps with fabricated, distorted, or misinterpreted memories about oneself or the world, without the conscious intention to deceive. [1]

• MB21.4 Disorientation

  Impairment in or loss of awareness of the position of the self in relation to place, time, situation, or other persons. In severe cases, the sense of personal identity may also be lost. [1]

• MB21.5 Distractibility

  Difficulty focusing on tasks; attention is easily diverted by extraneous stimuli. [1]

• MB21.6 Impaired abstract thinking

  The inability to use concepts and to make and understand generalizations, such as the identifying the properties or pattern shared by a variety of specific items or events. [1]

• MB21.7 Impaired executive functioning

  Impairment in higher-level cognitive abilities, such as planning, sequencing, concept formation, abstracting, and decision-making. [1]

• MB21.8 Impaired judgment

  Deficit in the capacity to make sound, reasoned, and responsible decisions. [1]

• MB21.9 Perseveration

  Persistent repetition of previously used words, phrases, or details that are not responsive to the demands of the situation. [1]

• MB21.A Poor concentration

  Difficulty focusing attention and sustaining the mental energy necessary to accomplish a task or goal. [1]

• MB21.B Racing thoughts

  Subjective perception of accelerated thought processes. [1]

References

1. World Health Organization. International Classification of Diseases, 11th Revision, for Mortality and Morbidity Statistics (ICD-11 MMS), 2026-01 release. World Health Organization; 2026.

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