Similar to Code 39 Extended, Code 93 Extended is a superset of Code 93. Extended characters are encoded by using a pair of Code 93 characters. For example, a lowercase "a" is encoded by the character pair "+A". The difference in Code 93 Extended, when compared to Code 39 Extended, is that the shift character used to encode an extended character is a reserved character, and not one of the standard 43 characters in the Code 93 character set. Code 93 Extended supports the full ASCII character set.

An example: