Charles Ellicott Commentary Leviticus 22:4

"What man soever of the seed of Aaron is a leper, or hath an issue; he shall not eat of the holy things, until he be clean. And whoso toucheth anything that is unclean by the dead, or a man whose seed goeth from him;" — Leviticus 22:4 (ASV)

Is a leper.—The different forms of uncleanness are now specified. (For the leper, see Leviticus 13:3.)

Or has a running issue.—See Leviticus 15:2.

Whoever touches anything that is unclean by the dead.—That is, if he touches any person or anything that had been defiled through contact with a corpse. (See Numbers 19:11-14.)

Whose seed goes from him.—This is the same case mentioned in Leviticus 15:16. The two passages ought therefore to be uniform in the translation.