F02 — Dementia in other diseases classified elsewhere

Concept, in one sentence

Dementia attributed to a specific, confirmed, non-vascular, non-Alzheimer disease with a plausible causal link.

Decisive boundary cues

• A confirmed named disease with a plausible link to cognition -> weighs toward F02.
• No such disease identified -> weighs back toward F00 or F01 depending on course.

Duration/course cue

Follows the trajectory of the underlying disease.

Nearest alternatives

F00, F01, F07

Common mistake

Assigning F02 based on any coexisting chronic illness rather than a disease with a recognised, plausible causal link to dementia.

Retrieval prompt — one-line memory anchor

What confirmed diagnosis, if any, is actually driving this person's cognitive decline?