ICD-10 Diagnosis Code J09.X

Influenza due to identified novel influenza A virus

Diagnosis Code J09.X

ICD-10: J09.X
Short Description: Influenza due to identified novel influenza A virus
Long Description: Influenza due to identified novel influenza A virus
This is the 2018 version of the ICD-10-CM diagnosis code J09.X

Not Valid for Submission
The code J09.X is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the respiratory system (J00–J99)
    • Influenza and pneumonia (J09-J18)
      • Influenza due to certain identified influenza viruses (J09)

Information for Medical Professionals

Index of Diseases and Injuries
References found for the code J09.X in the Index of Diseases and Injuries:

Information for Patients


Also called: Grippe, Influenza

Flu is a respiratory infection caused by a number of viruses. The viruses pass through the air and enter your body through your nose or mouth. Between 5% and 20% of people in the U.S. get the flu each year. The flu can be serious or even deadly for elderly people, newborn babies, and people with certain chronic illnesses.

Symptoms of the flu come on suddenly and are worse than those of the common cold. They may include

  • Body or muscle aches
  • Chills
  • Cough
  • Fever
  • Headache
  • Sore throat

Is it a cold or the flu? Colds rarely cause a fever or headaches. Flu almost never causes an upset stomach. And "stomach flu" isn't really flu at all, but gastroenteritis.

Most people with the flu recover on their own without medical care. People with mild cases of the flu should stay home and avoid contact with others, except to get medical care. If you get the flu, your health care provider may prescribe medicine to help your body fight the infection and lessen symptoms.

The main way to keep from getting the flu is to get a yearly flu vaccine. Good hygiene, including hand washing, can also help.

NIH: National Institute of Allergy and Infectious Diseases

  • College students and the flu (Medical Encyclopedia)
  • Flu (Medical Encyclopedia)
  • Flu (Influenza): Information for Parents (Centers for Disease Control and Prevention)
  • Flu (Influenza): Information for Parents (American Academy of Family Physicians)
  • Flu (Influenza): Information for Parents (American Academy of Pediatrics)
  • Pregnancy and the flu (Medical Encyclopedia)
  • Your baby and the flu (Medical Encyclopedia)
  • Your child and the flu (Medical Encyclopedia)

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