Where a person who has suffered an illness or been injured, and who fell under any of the items of Article 30, paragraph (1) on the date of first medical examination relating to that injury or illness (hereinafter in this Article referred to as the "reference injury or illness"), and who is in a state of disability due to an injury or illness other than the reference injury or illness, comes, for the first time, during the period from the disability recognition date relating to the reference injury or illness until the day preceding the day of reaching 65 years of age, to be in a state of disability to the extent of falling under the disability grade by combining the disability caused by the reference injury or illness (hereinafter in this Article referred to as the "reference disability") with the other disability (limited to a case where the date of first medical examination for the reference injury or illness is on or after the date of first medical examination for the injury or illness other than the reference injury or illness (or, where there are two or more injuries or illnesses other than the reference injury or illness, all of the injuries or illnesses other than the reference injury or illness)), a disability basic pension is paid to that person according to the degree of disability obtained by combining the reference disability with the other disability.
疾病にかかり、又は負傷し、かつ、その傷病（以下この条において「基準傷病」という。）に係る初診日において第三十条第一項各号のいずれかに該当した者であつて、基準傷病以外の傷病により障害の状態にあるものが、基準傷病に係る障害認定日以後六十五歳に達する日の前日までの間において、初めて、基準傷病による障害（以下この条において「基準障害」という。）と他の障害とを併合して障害等級に該当する程度の障害の状態に該当するに至つたとき（基準傷病の初診日が、基準傷病以外の傷病（基準傷病以外の傷病が二以上ある場合は、基準傷病以外のすべての傷病）の初診日以降であるときに限る。）は、その者に基準障害と他の障害とを併合した障害の程度による障害基礎年金を支給する。
The provisions of the proviso to Article 30, paragraph (1) apply mutatis mutandis to the case referred to in the preceding paragraph. In this case, the term "that injury or illness" in the proviso to paragraph (1) of that Article is deemed to be replaced with "reference injury or illness".
Payment of the disability basic pension under paragraph (1) is, notwithstanding the provisions of Article 18, paragraph (1), to begin from the month following the month in which the claim for that disability basic pension was made.