noun which may take the genitive case particle 'no'
by item; itemized; per item
Used as a no-adjective to describe lists, breakdowns, or classifications organized by individual items or categories.
経費を項目別にまとめてください。
Please summarize the expenses by item.
項目別のリストを作成した。
I created an itemized list.
itemized deduction
Compound of 項目 (item, heading) and 別 (classification, distinction).