WordNet sense 1 (discussion of an event after it has occurred):

post-mortem

WordNet sense 2 (coming after or following):

succeeding

WordNet sense 3 (occurring or done after death):

postmortal

WordNet sense 4 (an examination and dissection of a dead body to determine cause of death or the changes produced by disease):

autopsy, necropsy, pm, postmortem examination, post-mortem examination