The Jogan-shiki Code was compiled from the existing "Konin-shiki Code" (the supplemental law determined in the Konin era), unifying corrected and supplemented rules and detailed regulations, and both codes were used together without abolishing the "Konin-shiki Code".
既存の『弘仁式』を増訂・追補した諸規定・細則を集めて編纂し、『弘仁式』を廃止することなく、両方を併用する方式を採った。