Field help: (2022) Last name, first name and date of birth of the co-insured person This text refers to the Steuer 2022. You can find the version for the Steuererklärung 2024 at: (2024): Last name, first name and date of birth of the co-insured person Enter the last name, first name, and date of birth of the co-insured person for whom you paid contributions to health / nursing care insurance.