Which code range is defined as Not Applicable in the A-range?

• A. A5-AB
• B. 0-0A
• C. AC- Attachment Control Number
• D. B3

Answer: (A)

In UB-04 coding, Not Applicable within a specific range is indicated by a defined set of codes in that range. For the A-range, the Not Applicable codes are all those from A5 through AB. That means any code in that A5-AB span signals that the data doesn’t apply for that field. The other options don’t fit because they either start outside the A-range (0-0A), refer to a different descriptor (AC- Attachment Control Number), or belong to a different range entirely (B3). So A5-AB is the Not Applicable range in the A-range.