In recommending couples for full-time missionary service, priesthood leaders are to follow the policy stated in the General Handbook of Instruction: "Generally, couples should not be recommended to serve full-time missions if either the husband or wife is 70 or older. However, in exceptional circumstances, couples older than 70 may be considered if their health is good. . . . (p. 7-1.)
Priesthood leaders should not minimize health restrictions in the hope that some activity will be found for the couple to perform within their limited capacity. When a couple's health would impose limitations on their capacity to serve as full-time missionaries, local leaders should find meaningful opportunities within the ward or stake - such as a stake mission. In this way the individuals can satisfy their desires to serve and enjoy the blessings of service in the Lord's kingdom while remaining in a situation where their health needs can be met.- Bulletin, 1987