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
MB21.1 — Amnesia
MB21.11 — Retrograde amnesia

ICD-11 MB21.11 — Retrograde amnesia

An inability to recall past experiences, especially where recall is to be expected, preceding an event (psychological or physical) presumed to be responsible for the amnesia.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.