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Rapid revision · F20-F29 block
F29 — Unspecified nonorganic psychosis
Concept, in one sentence
A confidently nonorganic psychosis with genuinely insufficient information available to specify a category, even an atypical one.
Decisive boundary cues
- Minimal history, no collateral information, no observation time yet -> weighs toward F29.
- Enough detail to describe a specific atypical picture -> weighs toward F28 over F29.
- Enough detail to apply F20-F25 with reasonable confidence -> use that category instead of F29.
Duration/course cue
No threshold; often a first-contact label, expected to be revised as more information becomes available.
Nearest alternatives
F28
Common mistake
Using F29 as a comfortable default for a complicated case, rather than reserving it for a genuine, checked absence of specifying information.
Retrieval prompt — one-line memory anchor
Is there truly not enough information here, or have I simply not checked the other categories yet?
This concise view does not replace the full learning unit. Open the full F29 learning unit →