# 国民健康保険法 / National Health Insurance Act — 第百十一条の二 (Article 111-2)

- Law: 国民健康保険法 (National Health Insurance Act), 昭和三十三年法律第百九十二号
- English title "National Health Insurance 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: 第百十一条の二 (Article 111-2)（被保険者記号・番号等の利用制限等） — address `art-111-2`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/national-health-insurance-act/art-111-2
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/333AC0000000192/art-111-2
- 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.

---

### 第百十一条の二（被保険者記号・番号等の利用制限等） — Restrictions on Use, etc. of Insured Person's Symbol and Number, etc.
<sup>caption: machine translation, not official</sup>
<sup>art-111-2 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2 · https://japanlaw.org/l/333AC0000000192/art-111-2</sup>

**第一項**  厚生労働大臣、都道府県、市町村、組合、保険医療機関等、指定訪問看護事業者その他の国民健康保険事業又は当該事業に関連する事務の遂行のため被保険者記号・番号等（保険者番号（厚生労働大臣が国民健康保険事業において市町村又は組合を識別するための番号として、市町村又は組合ごとに定めるものをいう。）及び被保険者記号・番号（市町村又は組合が被保険者の資格を管理するための記号、番号その他の符号として、被保険者ごとに定めるものをいう。）をいう。以下この条において同じ。）を利用する者として厚生労働省令で定める者（以下この条において「厚生労働大臣等」という。）は、当該事業又は事務の遂行のため必要がある場合を除き、何人に対しても、その者又はその者以外の者に係る被保険者記号・番号等を告知することを求めてはならない。
<sup>art-111-2/par-1 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-1</sup>
The Minister of Health, Labour and Welfare, prefectures, Municipalities, Societies, health insurance-covered medical institutions, etc., designated home-nursing providers and other persons specified by Order of the Ministry of Health, Labour and Welfare as persons who use the insured person's symbol and number, etc. (meaning insurer numbers (meaning numbers that the Minister of Health, Labour and Welfare sets for each Municipality or Society as numbers for identifying Municipalities or Societies in national health insurance services) and insured person's symbol and number (meaning symbols, numbers and other codes that a Municipality or Society sets for each insured person for managing eligibility as an insured person); hereinafter the same applies in this Article) for the performance of national health insurance services or affairs related to those services (referred to as the "Minister of Health, Labour and Welfare, etc." in this Article) must not, except where necessary for the performance of those services or affairs, request any person to disclose the insured person's symbol and number, etc. relating to that person or a person other than that person.
<sup>machine translation, not official</sup>

**第二項**  厚生労働大臣等以外の者は、国民健康保険事業又は当該事業に関連する事務の遂行のため被保険者記号・番号等の利用が特に必要な場合として厚生労働省令で定める場合を除き、何人に対しても、その者又はその者以外の者に係る被保険者記号・番号等を告知することを求めてはならない。
<sup>art-111-2/par-2 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-2</sup>
A person other than the Minister of Health, Labour and Welfare, etc. must not, except in cases specified by Order of the Ministry of Health, Labour and Welfare as cases where use of the insured person's symbol and number, etc. is particularly necessary for the performance of national health insurance services or affairs related to those services, request any person to disclose the insured person's symbol and number, etc. relating to that person or a person other than that person.
<sup>machine translation, not official</sup>

**第三項**  何人も、次に掲げる場合を除き、その者が業として行う行為に関し、その者に対し売買、貸借、雇用その他の契約（以下この項において「契約」という。）の申込みをしようとする者若しくは申込みをする者又はその者と契約の締結をした者に対し、当該者又は当該者以外の者に係る被保険者記号・番号等を告知することを求めてはならない。
<sup>art-111-2/par-3 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3</sup>
No person may, except in the following cases, with regard to acts that person conducts as a business, request a person who intends to apply, or applies, to that person for a contract of sale, lease, employment or other contract (hereinafter referred to as a "contract" in this paragraph), or a person who has concluded a contract with that person, to disclose the insured person's symbol and number, etc. relating to the person so requested or a person other than that person:
<sup>machine translation, not official</sup>

  **一**  厚生労働大臣等が、第一項に規定する場合に、被保険者記号・番号等を告知することを求めるとき。
  <sup>art-111-2/par-3/item-1 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3/item-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3/item-1</sup>
  where the Minister of Health, Labour and Welfare, etc. requests the disclosure of the insured person's symbol and number, etc. in a case prescribed in paragraph (1);
  <sup>machine translation, not official</sup>

  **二**  厚生労働大臣等以外の者が、前項に規定する厚生労働省令で定める場合に、被保険者記号・番号等を告知することを求めるとき。
  <sup>art-111-2/par-3/item-2 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3/item-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3/item-2</sup>
  where a person other than the Minister of Health, Labour and Welfare, etc. requests the disclosure of the insured person's symbol and number, etc. in a case specified by Order of the Ministry of Health, Labour and Welfare prescribed in the preceding paragraph.
  <sup>machine translation, not official</sup>

**第四項**  何人も、次に掲げる場合を除き、業として、被保険者記号・番号等の記録されたデータベース（その者以外の者に係る被保険者記号・番号等を含む情報の集合物であつて、それらの情報を電子計算機を用いて検索することができるように体系的に構成したものをいう。）であつて、当該データベースに記録された情報が他に提供されることが予定されているもの（以下この項において「提供データベース」という。）を構成してはならない。
<sup>art-111-2/par-4 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4</sup>
No person may, except in the following cases, constitute as a business a database in which the insured person's symbol and number, etc. are recorded (meaning a collection of information including the insured person's symbol and number, etc. relating to persons other than that person, systematically structured so that such information can be retrieved using a computer) and in which the information recorded is intended to be provided to others (hereinafter in this paragraph referred to as a "database for provision"):
<sup>machine translation, not official</sup>

  **一**  厚生労働大臣等が、第一項に規定する場合に、提供データベースを構成するとき。
  <sup>art-111-2/par-4/item-1 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4/item-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4/item-1</sup>
  where the Minister of Health, Labour and Welfare, etc. constitutes a database for provision in a case prescribed in paragraph (1);
  <sup>machine translation, not official</sup>

  **二**  厚生労働大臣等以外の者が、第二項に規定する厚生労働省令で定める場合に、提供データベースを構成するとき。
  <sup>art-111-2/par-4/item-2 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4/item-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4/item-2</sup>
  where a person other than the Minister of Health, Labour and Welfare, etc. constitutes a database for provision in a case specified by Order of the Ministry of Health, Labour and Welfare prescribed in paragraph (2).
  <sup>machine translation, not official</sup>

**第五項**  厚生労働大臣は、前二項の規定に違反する行為が行われた場合において、当該行為をした者が更に反復してこれらの規定に違反する行為をするおそれがあると認めるときは、当該行為をした者に対し、当該行為を中止することを勧告し、又は当該行為が中止されることを確保するために必要な措置を講ずることを勧告することができる。
<sup>art-111-2/par-5 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-5 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-5</sup>
When an act in violation of the provisions of the preceding two paragraphs has been committed and the Minister of Health, Labour and Welfare finds that the person who committed the act is likely to commit further acts in violation of those provisions repeatedly, the Minister may recommend that the person who committed the act cease the act, or recommend that the person take measures necessary to ensure that the act is ceased.
<sup>machine translation, not official</sup>

**第六項**  厚生労働大臣は、前項の規定による勧告を受けた者がその勧告に従わないときは、その者に対し、期限を定めて、当該勧告に従うべきことを命ずることができる。
<sup>art-111-2/par-6 · https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-6 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-6</sup>
When a person who has received a recommendation pursuant to the provisions of the preceding paragraph does not comply with the recommendation, the Minister of Health, Labour and Welfare may, by specifying a time limit, order that person to comply with the recommendation.
<sup>machine translation, not official</sup>

---

## Cites
- art-111-2/par-1: この条 → 国民健康保険法 第百十一条の二 (Article 111-2), art-111-2 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2 · https://japanlaw.org/l/333AC0000000192/art-111-2
- art-111-2/par-3: この項 → 国民健康保険法 第百十一条の二第三項 (Article 111-2, paragraph (3)), art-111-2/par-3 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3
- art-111-2/par-3/item-1: 第一項 → 国民健康保険法 第百十一条の二第一項 (Article 111-2, paragraph (1)), art-111-2/par-1 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-1
- art-111-2/par-3/item-2: 前項 → 国民健康保険法 第百十一条の二第二項 (Article 111-2, paragraph (2)), art-111-2/par-2 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-2
- art-111-2/par-4: この項 → 国民健康保険法 第百十一条の二第四項 (Article 111-2, paragraph (4)), art-111-2/par-4 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4
- art-111-2/par-4/item-1: 第一項 → 国民健康保険法 第百十一条の二第一項 (Article 111-2, paragraph (1)), art-111-2/par-1 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-1
- art-111-2/par-4/item-2: 第二項 → 国民健康保険法 第百十一条の二第二項 (Article 111-2, paragraph (2)), art-111-2/par-2 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-2
- art-111-2/par-5: 前二項 → 国民健康保険法 第百十一条の二第三項 (Article 111-2, paragraph (3)), art-111-2/par-3 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3
- art-111-2/par-5: 前二項 → 国民健康保険法 第百十一条の二第四項 (Article 111-2, paragraph (4)), art-111-2/par-4 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4
- art-111-2/par-6: 前項 → 国民健康保険法 第百十一条の二第五項 (Article 111-2, paragraph (5)), art-111-2/par-5 — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-5 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-5

## Cited by

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

- 国民健康保険法 第百十一条の二第一項（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-1
- 国民健康保険法 第百十一条の二第三項（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3
- 国民健康保険法 第百十一条の二第三項第一号（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3/item-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3/item-1
- 国民健康保険法 第百十一条の二第三項第二号（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-3/item-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-3/item-2
- 国民健康保険法 第百十一条の二第四項（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4
- 国民健康保険法 第百十一条の二第四項第一号（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4/item-1 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4/item-1
- 国民健康保険法 第百十一条の二第四項第二号（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-4/item-2 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-4/item-2
- 国民健康保険法 第百十一条の二第五項（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-5 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-5
- 国民健康保険法 第百十一条の二第六項（被保険者記号・番号等の利用制限等） — https://japanlaw.org/ja/national-health-insurance-act/art-111-2/par-6 · https://japanlaw.org/l/333AC0000000192/art-111-2/par-6
- 国民健康保険法 第百十一条の三第一項（報告及び検査） — https://japanlaw.org/ja/national-health-insurance-act/art-111-3/par-1 · https://japanlaw.org/l/333AC0000000192/art-111-3/par-1
- 国民健康保険法 第百二十一条の二第一項 — https://japanlaw.org/ja/national-health-insurance-act/art-121-2/par-1 · https://japanlaw.org/l/333AC0000000192/art-121-2/par-1

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 国民健康保険法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/333AC0000000192/20261001_507AC0000000087), retrieved 2026-10-17
- Japanese Law Translation Database System, Ministry of Justice (法務省) — National Health Insurance Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/2453/tb), retrieved 2026-10-17
- claude-sonnet-5-5 — Machine translation, batch national-health-insurance-act-20261017T183826-010, translated 2026-10-18
- This site's parser, version 209 — 国民健康保険法 — structure, counts, cross-references and defined terms, computed 2026-10-17