F89 — Unspecified disorder of psychological development

Concept, in one sentence

A developmental disorder genuinely evident, with subtype-specifying information genuinely missing — never a shortcut for an under-read vignette.

Decisive boundary cues

• No domain-specific detail anywhere in the vignette, confirmed by a careful read -> weighs toward F89.
• Domain-specific detail already present, just not yet checked closely -> weighs toward a more specific code, not F89.
• A presentation that can be specifically named despite not matching F80-F84 -> weighs toward F88, not F89.

Duration/course cue

Not applicable — the issue is missing specifying information, not elapsed time.

Nearest alternatives

F88

Common mistake

Reaching for F89 because a vignette has a lot of detail to work through, rather than because information is genuinely missing.

Retrieval prompt — one-line memory anchor

Have you actually checked this vignette against each of F80-F84's own criteria before concluding it can't be specified further?