2013 ICD-9-CM Diagnosis Code 327.33
Circadian rhythm sleep disorder, irregular sleep-wake type
- ICD-9-CM 327.33 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
327.33 Alternative Terminology
Convert 327.33 to ICD-10-CM 

ICD-9-CM Volume 2 Index entries containing back-references to 327.33: