Specific code 2013 ICD-9-CM Diagnosis Code 331.81
Reye's syndrome
  • ICD-9-CM 331.81 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 331.81 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 2013 version of ICD-9-CM 331.81.
  • More recent version(s) of ICD-9-CM 331.81: 2014 2015.
Convert to ICD-10-CM: 331.81 converts directly to:
  • 2015/16 ICD-10-CM G93.7 Reye's syndrome
Approximate Synonyms
  • Reyes syndrome
ICD-9-CM Volume 2 Index entries containing back-references to 331.81:
  • Reye's syndrome 331.81
  • Syndrome - see also Disease
    • Reye's 331.81
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 331.81 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.