It is sometimes classified with the
Bosavi languages.
Søren Wichmann (2013) tentatively considers it to be a separate, independent group. Pawley and Hammarström (2018) note that similarities between Bosavi and Dibiyaso are likely due to loanwords, therefore leaving Dibiyaso as unclassified. There is 19% lexical cognacy with
Turumsa, suggesting contact or perhaps even a genetic relationship with
Doso–Turumsa. ==Distribution==