ICD-9-CM diagnosis code (retired)
780.55 — Disruption of 24 hour sleep wake cycle, unspecified
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 780.55
780.55 is an ICD-9-CM diagnosis code for disruption of 24 hour sleep wake cycle, unspecified. 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, G47.20 (Circadian rhythm sleep disorder, unspecified type). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- G47.20Circadian rhythm sleep disorder, unspecified typeapproximate
Common questions about 780.55
What is the ICD-10 code for ICD-9 780.55?
- The GEMs map 780.55 to ICD-10-CM G47.20.
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.