2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Inflammatory Diseases Of The Central Nervous System 320-327 > Sleep Disorders 327.* >
 2007 ICD-9-CM Diagnosis 327.3
Circadian rhythm sleep disorder On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 327.3 can be accessed here. - 327.3 is a non-specific code that cannot be used to specify a diagnosis
- View the ICD-9-CM Volume 1 327.* hierarchy
327.3 also known as:- Organic disorder of sleep wake cycle
- Organic disorder of sleep wake schedule
327.3 excludes: - alcohol induced circadian rhythm sleep disorder (291.82)
- circadian rhythm sleep disorder of nonorganic origin (307.45)
- disruption of 24 hour sleep wake cycle NOS (780.55)
- drug induced circadian rhythm sleep disorder (292.85)
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