Identifies the NXX codes affected by this translation questionnaire.
NOTE 1: The number of NXX codes that may be specified is based on provider tariffs/practices.
USAGE: This field is conditional.
NOTE 1: Required when the SAC ACT field is "N", "A", "R" or "D".
NOTE 2: Optional when the SAC ACT field is "K".
NOTE 3: Otherwise prohibited.
DATA CHARACTERISTICS: 3 numeric characters
EXAMPLES: 7 8 7
8 2 2