ICD-9-CM diagnosis code (retired)
327.11 — Idiopathic hypersomnia with long sleep time
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 327.11
327.11 is an ICD-9-CM diagnosis code for idiopathic hypersomnia with long sleep time. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, G47.11 (Idiopathic hypersomnia with long sleep time). The match is exact.
ICD-10-CM equivalents
- G47.11Idiopathic hypersomnia with long sleep timeexact match
Common questions about 327.11
What is the ICD-10 code for ICD-9 327.11?
- The GEMs map 327.11 to ICD-10-CM G47.11.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.