ICD-11 classes
21 Symptoms, signs or clinical findings, not elsewhere...
Mental or behavioural symptoms, signs or clinical findings
MB21 — Symptoms, signs or clinical findings involving cognition
MB21.6 — Impaired abstract thinking

ICD-11 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.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.