Influenza due to unidentified influenza virus with other manifestations. J11. 89 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2022 edition of ICD-10-CM J11.
Code J09. X2 is the diagnosis code used for Influenza Due to Identified Novel Influenza A Virus with Other Respiratory Manifestations or commonly know as the FLU, falls under the category of Diseases of the respiratory system.
H3N2 is a subtype of the viral genus Influenzavirus A, which is an important cause of human influenza. Its name derives from the forms of the two kinds of proteins on the surface of its coat, hemagglutinin (H) and neuraminidase (N).
The ICD-10 code to use for flu vaccination is Z23, encounter for immunization. There are many CPT codes to describe influenza vaccine, varying by manufacturer, product and age group.
Table 3Diagnosis codes defining influenzaICD-9-CM codeDescription488.12Influenza due to identified 2009 H1N1 influenza virus with other respiratory manifestations488.19Influenza due to identified 2009 H1N1 influenza virus with other manifestations488.81Influenza due to identified novel influenza A virus with pneumonia31 more rows
The novel Influenza A (H1N1) is a respiratory disease caused by type A influenza viruses that cause regular outbreaks in pigs. People do not normally get H1N1, but human infections can and do happen.
Influenza A(H3N2) viruses have formed many separate, genetically different clades in recent years that continue to co-circulate. Influenza B viruses are not divided into subtypes, but instead are further classified into two lineages: B/Yamagata and B/Victoria.
Conclusions: Influenza A H3N2 infection was more severe than A H1N1 or B in terms of fever, leukopenia, and C-reactive protein. Myalgia and other symptoms such as fever, headache, general malaise and sore throat were equally frequent in influenza A H3N2, A H1N1, and B infections.
Influenza viruses that normally circulate in pigs are called “variant” viruses when they are found in people. Influenza A H3N2 variant viruses (also known as “H3N2v” viruses) with the matrix (M) gene from the 2009 H1N1 pandemic virus were first detected in people in July 2011.
Coding & Reimbursement 90662=Inactivated Influenza Vaccine, quadrivalent (IIV4), split virus, preservative free, enhanced immunogenicity via increased antigen content, for intramuscular use.
ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
For immunization administration other than COVID-19, codes 90460–90474 are reported for the administration of the vaccine, along with the appropriate vaccine/toxoid code (90476–90756) targeting the organism.