ICD-11 classes
21 Symptoms, signs or clinical findings, not elsewhere...
Mental or behavioural symptoms, signs or clinical findings
MB26 — Symptoms or signs involving content of thought
MB26.2 — Grandiosity

ICD-11 MB26.2 — Grandiosity

Exaggerated self-esteem or an unrealistic belief in one's superiority, importance, capacities, or identity.

The diagnosis includes nothing.

It has no clarifying diagnoses.