H1N1 flu is assigned to ICD-9-CM code 488.1, Influenza due to identified novel H1N1 influenza virus.Mar 15, 2010
Novel H1N1 influenza: A virus responsible for a flu pandemic in 2009 that was originally referred to as "swine flu" because many of the genes in this new virus were very similar to influenza viruses that normally occur in pigs in North America. However, the virus is actually a novel influenza A (H1N1) virus.Mar 6, 2021
ICD-10-CM Code for Influenza due to other identified influenza virus with other respiratory manifestations J10. 1.
H1N1 flu is a subtype of influenza A. Subtypes of influenza A are categorized based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). There are many H and N subtypes, and each one is numbered. All H and N flu subtypes are influenza A viruses.
It is known that avian influenza H5N1 viruses can occasionally infect but not transmit among humans, while the 2009 pandemic H1N1 virus (which continues to circulate) readily transmits from person to person.May 7, 2013
Influenza viruses Most influenza virus subgroups have two surface proteins described as peplomers, neuraminidase (an enzyme) and hemagglutinin (also a class I fusion protein).
Q: Why is H1N1 flu sometimes called “swine flu?” A: This virus was originally referred to as “swine flu” because laboratory testing showed that many of the genes in this new virus were very similar to influenza viruses that normally occur in pigs in North America.
In virology, influenza A virus subtype H1N1 (A/H1N1) is a subtype of Influenza A virus. Well known outbreaks of H1N1 strains in humans include the Spanish flu, the 1977 Russian flu pandemic and the 2009 swine flu pandemic. It is an orthomyxovirus that contains the glycoproteins hemagglutinin and neuraminidase.
Influenza A viruses are classified by subtypes based on the properties of their hemagglutinin (H or HA) and neuraminidase (N or NA) surface proteins.Nov 2, 2021