2025 ICD-10-CM code J09
Influenza due to certain identified influenza viruses
Medical necessity is established by the signs, symptoms, and confirmed diagnosis of influenza caused by a specific, identified influenza virus strain.
Clinicians are responsible for accurately identifying the specific influenza virus and documenting the patient's signs and symptoms.
In simple words: This code indicates that the patient has the flu caused by a specific, known type of influenza virus.
This code encompasses influenza caused by specific and identified influenza viruses, excluding influenza A/H1N1, other identified influenza viruses (J10.-), unidentified influenza virus (J11.-), seasonal influenza due to other identified influenza virus (J10.-), and seasonal influenza due to unidentified influenza virus (J11.-).
Example 1: A patient presents with fever, cough, and muscle aches. A rapid influenza test confirms infection with a specific, identifiable influenza virus strain other than H1N1., A patient with a confirmed diagnosis of avian influenza (H5N1 or H7N9), documented through laboratory testing., A patient with laboratory-confirmed influenza from a known novel strain of influenza A.
Documentation should include the type of influenza virus identified, the patient's symptoms, and any diagnostic test results.
- Specialties:Infectious Disease, Family Medicine, Internal Medicine, Pediatrics
- Place of Service:Office, Inpatient Hospital, Outpatient Hospital, Emergency Room - Hospital, Telehealth Provided in Patient’s Home, Telehealth Provided Other than in Patient’s Home