Terminal-Digit Filing

How records are filed using terminal-digit filing:*

Records are ordered by the last two digits, then the middle two digits, and finally in numerical order by the first two digits. Example: 42-32-13, 52-24-66, 42-32-66, and 13-24-66 would be ordered as:

42-32-13, then
13-24-66, then
52-24-66, and lastly
42-32-66

*Health Information Management Technology, edited by Merida L. Johns, PhD. RHIA, 2002, p. 784.