ICD-10-CM Code R56.0

Febrile convulsions

Version 2020 Non-Billable Code No Valid Principal Dx

Not Valid for Submission

R56.0 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of febrile convulsions. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

Short Description:Febrile convulsions
Long Description:Febrile convulsions

Consider the following ICD-10 codes with a higher level of specificity:

  • R56.00 - Simple febrile convulsions
  • R56.01 - Complex febrile convulsions

Clinical Information

  • SEIZURES FEBRILE-. seizures that occur during a febrile episode. it is a common condition affecting 2 5% of children aged 3 months to five years. an autosomal dominant pattern of inheritance has been identified in some families. the majority are simple febrile seizures generally defined as generalized onset single seizures with a duration of less than 30 minutes. complex febrile seizures are characterized by focal onset duration greater than 30 minutes and/or more than one seizure in a 24 hour period. the likelihood of developing epilepsy i.e. a nonfebrile seizure disorder following simple febrile seizures is low. complex febrile seizures are associated with a moderately increased incidence of epilepsy. from menkes textbook of child neurology 5th ed p784

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • General symptoms and signs (R50-R69)
      • Convulsions, not elsewhere classified (R56)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Seizures are symptoms of a brain problem. They happen because of sudden, abnormal electrical activity in the brain. When people think of seizures, they often think of convulsions in which a person's body shakes rapidly and uncontrollably. Not all seizures cause convulsions. There are many types of seizures and some have mild symptoms. Seizures fall into two main groups. Focal seizures, also called partial seizures, happen in just one part of the brain. Generalized seizures are a result of abnormal activity on both sides of the brain.

Most seizures last from 30 seconds to 2 minutes and do not cause lasting harm. However, it is a medical emergency if seizures last longer than 5 minutes or if a person has many seizures and does not wake up between them. Seizures can have many causes, including medicines, high fevers, head injuries and certain diseases. People who have recurring seizures due to a brain disorder have epilepsy.

NIH: National Institute of Neurological Disorders and Stroke

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