The classification includes such items as literary art, chogi (ceremony at Imperial Court), Jingikan (Department of Divinities), Daijokan (Grand Council of State), the Setsuroku family (the family which produced the Regent and the Chief Adviser to the Emperor), the Kugyo family (kugyo means a Court noble), besso, achievements, teii (Chinese name of police), naiki (secretary of the Ministry of Central Affairs), kiden (biographical books), Onmyodo (yin-yang philosophy), rekido (the study of the calendar), tenmondo (astrology), ido (medical ethics), Buddhist service, Dazaifu (local government office in Kyushu region), foreign countries, miscellaneous writings, misfortunes, shokoku-zatsuji (miscellaneous matters of various districts), shokoku-kumon (official documents of various districts) and shokoku koka (merits and demerits of various districts), however, these items are about existing parts, therefore, it is unknown what kinds of classification were included in the missing nine volumes.
分類は、文筆・朝儀・神祇官・太政官・摂籙家・公卿家・別奏・功労・廷尉・内記・紀伝・陰陽道・暦道・天文道・医道・仏事・太宰府・異国・雑文・凶事・諸国雑事・諸国公文・諸国功過の各項目であるが、これは現存する部分についてであり、失われた9巻にどのような分類が含まれていたのかは不明である。