noun
kanji code
Computing term for a numeric code assigned to a kanji character in character encoding standards (e.g., JIS, Unicode).
この漢字の漢字コードを調べてください。
Please look up the kanji code for this character.
文字コード is a broader term for character codes in general, while 漢字コード specifically refers to codes for kanji characters.
Compound of 漢字 (kanji) and コード (code), a straightforward technical term.