The Minister of Health, Labour and Welfare maintains a National Pension register, and records in it the name of the insured person, the acquisition and loss of status, changes of category, the state of payment of premiums, the Basic Pension Number (meaning the symbols and numbers specified by Order of the Ministry of Health, Labour and Welfare that are used to carry out affairs concerning the administration of government-administered pension programs (meaning the National Pension program and the Employees' Pension Insurance program administered by the government) and other affairs related to those programs that are specified by Order of the Ministry of Health, Labour and Welfare), and other matters specified by Order of the Ministry of Health, Labour and Welfare.
厚生労働大臣は、国民年金原簿を備え、これに被保険者の氏名、資格の取得及び喪失、種別の変更、保険料の納付状況、基礎年金番号（政府管掌年金事業（政府が管掌する国民年金事業及び厚生年金保険事業をいう。）の運営に関する事務その他当該事業に関連する事務であつて厚生労働省令で定めるものを遂行するために用いる記号及び番号であつて厚生労働省令で定めるものをいう。）その他厚生労働省令で定める事項を記録するものとする。