ICD-9-CM diagnosis code (retired)
327.37 — Circadian rhythm sleep disorder in conditions classified elsewhere
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 327.37
327.37 is an ICD-9-CM diagnosis code for circadian rhythm sleep disorder in conditions classified elsewhere. 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, G47.27 (Circadian rhythm sleep disorder in conditions classified elsewhere). The match is exact.
ICD-10-CM equivalents
- G47.27Circadian rhythm sleep disorder in conditions classified elsewhereexact match
Common questions about 327.37
What is the ICD-10 code for ICD-9 327.37?
- The GEMs map 327.37 to ICD-10-CM G47.27.
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.