# 刑事訴訟法 / Code of Criminal Procedure — 第百七十一条 (Article 171) This is the Markdown twin of https://japanlaw.org/en/code-of-criminal-procedure/art-171. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 刑事訴訟法 (Code of Criminal Procedure), 昭和二十三年法律第百三十一号 - English title "Code of Criminal Procedure": 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: 第百七十一条 (Article 171) — address `art-171` - Text in force since: 2026-10-20 - URL (the page that opens at this provision): https://japanlaw.org/en/code-of-criminal-procedure/art-171 - e-Gov law ID: 323AC0000000131 — never renamed. A permanent link, `/l/{lawId}/{address}` on this site, redirects to the page. - Every provision below carries its address and its URL 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. --- ### 第百七十一条 art-171 · https://japanlaw.org/en/code-of-criminal-procedure/art-171 **第一項** 前章の規定は、勾引に関する規定を除き、鑑定について準用する。この場合において、第百五十七条の六第二項中「ときは、」とあるのは、「とき、又は鑑定人を尋問する場合（鑑定の経過及び結果に関する尋問をする場合を除く。）において、相当と認めるときは、」と読み替えるものとする。 art-171/par-1 · https://japanlaw.org/en/code-of-criminal-procedure/art-171/par-1 The provisions of the preceding Chapter apply mutatis mutandis to expert examination, except for the provisions on subpoena. In this case, the phrase "when a court finds it appropriate in the following cases," in Article 157-6, paragraph (2) is deemed to be replaced with "when a court finds it appropriate in the following cases, or when examining an expert witness (excluding examination concerning the process and conclusion of the expert examination) and the court finds it appropriate,". machine translation, not official --- ## Cites - art-171/par-1: 第百五十七条の六第二項 → 刑事訴訟法 第百五十七条の六第二項 (Article 157-6, paragraph (2)), art-157-6/par-2 — https://japanlaw.org/en/code-of-criminal-procedure/art-157-6/par-2 ## Cited by 1 provision cites this one. No official source publishes this direction. - 刑事訴訟法 第百七十八条第一項 — https://japanlaw.org/en/code-of-criminal-procedure/art-178/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 刑事訴訟法 — the text in force from 2026-10-20 (https://laws.e-gov.go.jp/law/323AC0000000131/20261020_508AC0000000067), retrieved 2026-11-06 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Code of Criminal Procedure — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/3739/tb), retrieved 2026-11-06 - claude-sonnet-5-5, corrected on review by claude-opus-5-5 — Machine translation corrected on review, batch code-of-criminal-procedure-20261106T054114-005, translated 2026-11-06 - This site's parser, version 225 — 刑事訴訟法 — structure, counts, cross-references and defined terms, computed 2026-11-06