X53 Subfield: $k - Summary number span caption hierarchy

Subfield $k contains the caption at a level higher than the last for a summary number span when the classification scheme identified in field 084 (Classification Scheme and Edition) is the Dewey Decimal Classification. Caption hierarchies for single classification numbers, defined numbers spans , or other types of summary number spans are contained in subfield $h. The last caption in the caption hierarchy for a summary number span in field 153 (008/07 Type of number , code c for summary number span) is recorded in subfield $j.