852 Subfield $i - Item part:

Subfield $i contains a Cutter, date, or term that is added to the classification contained in subfield $h (Classification part) to distinguish one item from any other item assigned the same classification.  A call number suffix is contained in subfield $m (Call number suffix).

Examples:

852  01  $aNvLN$hZ67$i.L7

852  81  $aFrPALP$hPer$iREF

[Reference periodicals all shelved together, unclassified.]

852  80  $a[location identifier]$hM$iSi55

[Local classification used by library, where mysteries are shelved together and cuttered for author.]