Postmortem examination is frequently considered to be a synonymous term for autopsy. However, literally any examination performed after death is a postmortem examination. All examinations of cases received at coroners' offices are performed postmortem. These examinations vary in extent, depending upon the circumstances and developments disclosed upon investigation by police and others.
S. R. Gerber, Postmortem Examinations, 6 Clev.-Marshall L. Rev. 194 (1957)