37,537 confirmed cases of pandemic (h1n1) 2009 and 191 deaths reported in australia according to department of health. in 2009, h1n1 influenza 2009 (human swine influenza) was the underlying cause of 77 deaths in australia. the abs implemented world health organization (who) guidelines to code all swine flu deaths to the icd-10 code of influenza due to certain identified influenza virus (j09).