Juvenile:
Code j (008/22 and 006/05 - BK) indicates that the item is intended for use by children and young people through the age of 15 or the 9th grade. An item considered juvenile will often include the word juvenile in its subject heading(s). The code is used when a more specific code for the juvenile target audience is not desired.
Examples:
008/22 j
650 #0$aGrizzly bear$xJuvenile literature.
008/22 j
245 00$aSaturday morning heroes ...