The death claim letter should be written in the formal letter format. Check the samples provided below for your reference.This is to inform you that (Full Name) died on (Month, Date, Year). Please send me the neces sary instructions to complete a claim under policy number(s). A date of death value letter provides account balance information on the date the account owner passed away. We'll need a photocopy of the death certificate to verify the identity and legal residence of your loved one as well as confirm date of death. Local Social Security Administration (SSA) Office Address: For SSA. Important documents such as a Will and "Final Instructions" letter might be in the safe box. The full legal name of the deceased person. The date and place of the deceased person's death.