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 327.36 Circadian rhythm sleep disorder, shift work type View the most recent version of ICD-9-CM 327.36 327.36 is a specific code that can be used to specify a diagnosis 327.36 contains 3 index entries View the ICD-9-CM Volume 1 327.* hierarchy  Index entries containing 327.36: Changing sleep-work schedule, affecting sleep 327.36 Disorder - see also Disease sleep 780.50 circadian rhythm 327.30 shift work type 327.36 Shifting sleep-work schedule (affecting sleep) 327.36