Specific code 2015 ICD-9-CM Diagnosis Code 327.36
Circadian rhythm sleep disorder, shift work type
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 327.36 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 327.36 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).
Convert to ICD-10-CM: 327.36 converts directly to:
  • 2015/16 ICD-10-CM G47.26 Circadian rhythm sleep disorder, shift work type
Approximate Synonyms
  • Work shift change
Clinical Information
  • A subtype of circadian rhythm sleep disorder in which the individual exhibits a normal endogenous pattern of sleep and wakefulness, but this pattern comes into conflict with the desired pattern of sleep and wakefulness required by shift work
ICD-9-CM Volume 2 Index entries containing back-references to 327.36:
  • Changing sleep-work schedule, affecting sleep 327.36
  • Disorder - see also Disease
    • sleep 780.50
      • with apnea - see Apnea, sleep
      • alcohol induced 291.82
      • arousal 307.46
      • circadian rhythm 327.30
      • drug induced 292.85
      • initiation or maintenance (see also Insomnia) 780.52
      • nonorganic origin 307.40
      • organic specified type NEC 327.8
      • periodic limb movement 327.51
      • specified NEC 780.59
      • wake
        • cycle - see Disorder, sleep, circadian rhythm
        • schedule - see Disorder, sleep, circadian rhythm
  • Shifting
    • sleep-work schedule (affecting sleep) 327.36
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 327.36 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.