# 民法 / Civil Code — 第三百九十八条の四 (Article 398-4) - Law: 民法 (Civil Code), 明治二十九年法律第八十九号 - English title "Civil Code": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第三百九十八条の四 (Article 398-4)（根抵当権の被担保債権の範囲及び債務者の変更） — address `art-398-4` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/art-398-4 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-398-4 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第三百九十八条の四（根抵当権の被担保債権の範囲及び債務者の変更） — (Alterations in Scope of Secured Claims Under Revolving Mortgages and of Obligors) caption: Ministry of Justice translation — Japanese Law Translation Database System art-398-4 · https://japanlaw.org/ja/civil-code/art-398-4 · https://japanlaw.org/l/129AC0000000089/art-398-4 **第一項** 元本の確定前においては、根抵当権の担保すべき債権の範囲の変更をすることができる。債務者の変更についても、同様とする。 art-398-4/par-1 · https://japanlaw.org/ja/civil-code/art-398-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-1 The scope of the claims to be secured by a revolving mortgage may be changed if the change is effected before the principal is fixed. The same applies with respect to change of obligors. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の変更をするには、後順位の抵当権者その他の第三者の承諾を得ることを要しない。 art-398-4/par-2 · https://japanlaw.org/ja/civil-code/art-398-4/par-2 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-2 In order to effect the changes referred to in the preceding paragraph, it is not required that the approval of third parties including subordinated mortgagee be obtained. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 第一項の変更について元本の確定前に登記をしなかったときは、その変更をしなかったものとみなす。 art-398-4/par-3 · https://japanlaw.org/ja/civil-code/art-398-4/par-3 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-3 If the change under paragraph (1) is not registered before the principal is fixed, it is deemed that the change was not effected. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-398-4/par-2: 前項 → 民法 第三百九十八条の四第一項 (Article 398-4, paragraph (1)), art-398-4/par-1 — https://japanlaw.org/ja/civil-code/art-398-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-1 - art-398-4/par-3: 第一項 → 民法 第三百九十八条の四第一項 (Article 398-4, paragraph (1)), art-398-4/par-1 — https://japanlaw.org/ja/civil-code/art-398-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-1 ## Cited by 5 provisions cite this one. No official source publishes this direction. - 民法 第三百九十八条の四第二項（根抵当権の被担保債権の範囲及び債務者の変更） — https://japanlaw.org/ja/civil-code/art-398-4/par-2 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-2 - 民法 第三百九十八条の四第三項（根抵当権の被担保債権の範囲及び債務者の変更） — https://japanlaw.org/ja/civil-code/art-398-4/par-3 · https://japanlaw.org/l/129AC0000000089/art-398-4/par-3 - 民法 第三百九十八条の六第二項（根抵当権の元本確定期日の定め） — https://japanlaw.org/ja/civil-code/art-398-6/par-2 · https://japanlaw.org/l/129AC0000000089/art-398-6/par-2 - 民法 第三百九十八条の八第三項（根抵当権者又は債務者の相続） — https://japanlaw.org/ja/civil-code/art-398-8/par-3 · https://japanlaw.org/l/129AC0000000089/art-398-8/par-3 - 民法 附則第三条第一項（新法の適用の制限） — https://japanlaw.org/ja/civil-code/suppl-3461-99/art-3/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-3461-99/art-3/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 民法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/129AC0000000089/20260624_508AC0000000045), retrieved 2026-10-11 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Civil Code — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11