2006 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.* > 2006 ICD-9-CM Diagnosis 327.30 Circadian rhythm sleep disorder, unspecified View the most recent version of ICD-9-CM 327.30 327.30 is a specific code that can be used to specify a diagnosis 327.30 contains 1 index entry View the ICD-9-CM Volume 1 327.* hierarchy  Index entries containing 327.30: Disorder - see also Disease sleep 780.50 circadian rhythm 327.30 advanced sleep phase type 327.32 alcohol induced 291.82 delayed sleep phase type 327.31 drug induced 292.85 free running type 327.34 in conditions classified elsewhere 327.37 irregular sleep-wake type 327.33 jet lag type 327.35 other 327.39 shift work type 327.36