ICD-9 Diagnosis Code 780.55

Irreg sleep-wake rhy NOS

Diagnosis Code 780.55

ICD-9: 780.55
Short Description: Irreg sleep-wake rhy NOS
Long Description: Disruption of 24 hour sleep wake cycle, unspecified
This is the 2014 version of the ICD-9-CM diagnosis code 780.55

Code Classification
  • Symptoms, signs, and ill-defined conditions
    • Symptoms (780-789)
      • 780 General symptoms

Information for Medical Professionals

Convert to ICD-10 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Disorder of sleep-wake cycle
  • Disruptions of 24 hour sleep-wake cycle
  • Irregular sleep-wake pattern
  • Reversed sleep-wake cycle
  • Sleep-wake schedule disorder
  • Sleep-wake schedule disorder, advanced phase type
  • Sleep-wake schedule disorder, delayed phase type
  • Sleep-wake schedule disorder, disorganized type
  • Sleep-wake schedule disorder, frequently changing type

Index of Diseases and Injuries
References found for the code 780.55 in the Index of Diseases and Injuries:

    • Disruption
      • phase-shift, of 24 hour sleep wake cycle, unspecified 780.55
        • nonorganic origin 307.45
      • sleep wake cycle (24 hour), unspecified 780.55
        • circadian rhythm 327.33
        • nonorganic origin 307.45

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