Many variations of the Charlson comorbidity index have been presented, including the Charlson/Deyo, Charlson/Romano, Charlson/Manitoba, and Charlson/D'Hoores comorbidity indices.
Charlson'i komorbiidsusindeksist on esitletud mitmeid eri versioone, sealhulgas Charlsoni/Deyo, Charlsoni/Romano, Charlsoni/Manitoba ja Charlsoni/D'Hooresi komorbiidsusindekseid.