Circadian rhythm sleep disorder, irregular sleep-wake type
Short description: CIRCADIAN RHYM-IRREG SLP.
ICD-9-CM 327.33 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 327.33 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
You are viewing the 2008 version of ICD-9-CM 327.33.