F64 — Gender identity disorders

Concept, in one sentence

F64 reflects ICD-10's now-superseded framing of persistent gender incongruence; gender identity itself is not a disorder, and distress from discrimination is not the same as distress from incongruence.

Decisive boundary cues

• Persistent incongruence, distress attributable to the incongruence itself, as ICD-10 frames it -> the classification as written.
• Distress attributable to discrimination, rejection, or lack of support -> not evidence of this classification; a social/support issue instead.
• Confusion or distress about sexual orientation rather than gender identity -> a different dimension (see F66).

Duration/course cue

ICD-10 requires persistence, generally at least two years for F64.0.

Nearest alternatives

f66, f65

Common mistake

Conflating gender identity with sexual orientation, or attributing distress caused by discrimination to the person's identity itself.

Retrieval prompt — one-line memory anchor

Is any distress described here actually about the incongruence itself, or about how others have responded to it?