Non-specific code 2013 ICD-9-CM Diagnosis Code 327.1
Organic disorder of excessive somnolence [organic hypersomnia]
  • There are 7 ICD-9-CM codes below 327.1 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
  • You are viewing the 2013 version of ICD-9-CM 327.1.
  • More recent version(s) of ICD-9-CM 327.1: 2014 2015.
327.1 Excludes
  • hypersomnia NOS (780.54)
  • hypersomnia not due to a substance or known physiological condition (307.43-307.44)
  • hypersomnia with sleep apnea NOS (780.53)
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 327.1 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 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.