# 医師法 / Medical Practitioners' Act — 第二十二条 (Article 22)

- Law: 医師法 (Medical Practitioners' Act), 昭和二十三年法律第二百一号
- English title "Medical Practitioners' Act": 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: 第二十二条 (Article 22) — address `art-22`
- Text in force since: 2026-05-21
- URL (the page that opens at this provision): https://japanlaw.org/ja/medical-practitioners-act/art-22
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000201/art-22
- 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.

---

### 第二十二条
<sup>art-22 · https://japanlaw.org/ja/medical-practitioners-act/art-22 · https://japanlaw.org/l/323AC0000000201/art-22</sup>

**第一項**  医師は、患者に対し治療上薬剤を調剤して投与する必要があると認めた場合には、患者又は現にその看護に当たつている者に対して処方箋を交付しなければならない。ただし、患者又は現にその看護に当たつている者が処方箋の交付を必要としない旨を申し出た場合及び次の各号のいずれかに該当する場合においては、この限りでない。
<sup>art-22/par-1 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1 · https://japanlaw.org/l/323AC0000000201/art-22/par-1</sup>
If a medical practitioner finds it necessary to dispense and administer medicine as a part of a patient's treatment, the medical practitioner must issue a prescription to the patient or a person caring for the patient; provided, however, that this does not apply when the patient or a person caring for the patient states that it is not necessary to issue a prescription, or in any of the following cases:
<sup>machine translation, not official</sup>

  **一**  暗示的効果を期待する場合において、処方箋を交付することがその目的の達成を妨げるおそれがある場合
  <sup>art-22/par-1/item-1 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-1 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-1</sup>
  when a suggestive effect is expected and issuing a prescription is likely to hinder this from being achieved;
  <sup>machine translation, not official</sup>

  **二**  処方箋を交付することが診療又は疾病の予後について患者に不安を与え、その疾病の治療を困難にするおそれがある場合
  <sup>art-22/par-1/item-2 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-2 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-2</sup>
  when issuing a prescription is likely to cause anxiety to the patient about their medical care or prognosis, and may complicate the treatment of the illness;
  <sup>machine translation, not official</sup>

  **三**  病状の短時間ごとの変化に即応して薬剤を投与する場合
  <sup>art-22/par-1/item-3 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-3 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-3</sup>
  when medicines are administered in response to changes in symptoms over short periods of time;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **四**  診断又は治療方法の決定していない場合
  <sup>art-22/par-1/item-4 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-4 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-4</sup>
  when the diagnosis or method of treatment has not been decided;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **五**  治療上必要な応急の措置として薬剤を投与する場合
  <sup>art-22/par-1/item-5 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-5 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-5</sup>
  when medicine is administered as an emergency measure necessary for treatment;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **六**  安静を要する患者以外に薬剤の交付を受けることができる者がいない場合
  <sup>art-22/par-1/item-6 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-6 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-6</sup>
  when there is no person other than the patient who requires rest, to whom the medicines can be delivered;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **七**  覚醒剤を投与する場合
  <sup>art-22/par-1/item-7 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-7 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-7</sup>
  when stimulants are to be administered; or
  <sup>machine translation, not official</sup>

  **八**  薬剤師が乗り組んでいない船舶内において薬剤を投与する場合
  <sup>art-22/par-1/item-8 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1/item-8 · https://japanlaw.org/l/323AC0000000201/art-22/par-1/item-8</sup>
  when medicine is administered aboard a vessel with no pharmacist on board.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第二項**  医師は、地域における医療及び介護の総合的な確保の促進に関する法律（平成元年法律第六十四号）第十二条の二第一項の規定により処方箋を提供した場合は、前項の患者又は現にその看護に当たつている者に対して処方箋を交付したものとみなす。
<sup>art-22/par-2 · https://japanlaw.org/ja/medical-practitioners-act/art-22/par-2 · https://japanlaw.org/l/323AC0000000201/art-22/par-2</sup>
When a medical practitioner has provided a prescription pursuant to the provisions of Article 12-2, paragraph (1) of the Act on Promotion of Comprehensive Securing of Medical and Long-Term Care in Communities (Act No. 64 of 1989), the medical practitioner is deemed to have issued a prescription to the patient or the person caring for the patient set forth in the preceding paragraph.
<sup>machine translation, not official</sup>

---

## Cites
- art-22/par-2: 地域における医療及び介護の総合的な確保の促進に関する法律（平成元年法律第六十四号）第十二条の二第一項 → e-Gov law 401AC0000000064, 第十二条の二第一項 (Article 12-2, paragraph (1)), art-12-2/par-1 — not held in this collection
- art-22/par-2: 前項 → 医師法 第二十二条第一項 (Article 22, paragraph (1)), art-22/par-1 — https://japanlaw.org/ja/medical-practitioners-act/art-22/par-1 · https://japanlaw.org/l/323AC0000000201/art-22/par-1

## Cited by

2 provisions cite this one. No official source publishes this direction.

- 医師法 第二十二条第二項 — https://japanlaw.org/ja/medical-practitioners-act/art-22/par-2 · https://japanlaw.org/l/323AC0000000201/art-22/par-2
- 医師法 第三十三条の三第一項第一号 — https://japanlaw.org/ja/medical-practitioners-act/art-33-3/par-1/item-1 · https://japanlaw.org/l/323AC0000000201/art-33-3/par-1/item-1

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 医師法 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/323AC0000000201/20260521_505AC0000000063), retrieved 2026-10-09
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Medical Practitioners' Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3992/tb), retrieved 2026-10-09
- claude-sonnet-5-5 — Machine translation, batch medical-practitioners-act-20261009T095312-003, translated 2026-10-09
- This site's parser, version 165 — 医師法 — structure, counts, cross-references and defined terms, computed 2026-10-09