327.12
Idiopathic hypersomnia without long sleep time
The ICD-9 code for idiopathic hypersomnia without long sleep time is 327.12.
Legacy code — retired October 1, 2015ICD-10-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents.
View ICD-9 → ICD-10 crosswalk for 327.12 →