Mo. Rev. Stat. § 193.175

The funeral director or person in charge of final disposition of a dead body shall, prior to the interment of such dead body, affix on the ankle or wrist of the deceased and/or in a capsule or other container placed in the casket or, if the dead body is cremated, on the inside of the vessel containing the remains, a tag encased in durable and long-lasting material containing the name of the deceased, the date of birth, date of death and Social Security number of the deceased.