1. Month, day, and year that the incident or exposure occurred. 2. In workers’ compensation, months, day, and year the employee first suffered disability from an accident or exposure by present or previous employment. Many times, the date of injury may be the last day worked. When completing the CMS-1500, the date of injury is inserted in Block 14 of the paper claim form.

MEDICAL,USA: Date on which the insurance application is approved and the policy is issued by the insurance company. Life insurance policies sometimes provide suicide and incontestability clauses measured from the date of issue.
***
The date stated in a policy as the date on which the contract was issued by the insurer. This is not necessarily the effective date of the policy.
***
The date the policy was created by the insurer. This can be a different date than the effective date.

Month, day, and year that usually appears on the front page of an insurance policy as to when the policy became effective.

Month, day, and year on the return voucher of “return receipt requested” certified or registered U.S. post office mail, unless otherwise defined.

1. Month, day, and year that a professional service is rendered or a supply item is given to a patient by a provider. This date is entered on the patient’s encounter form and charted in the patient’s medical record along with documentation by the provider detailing the services and/or supplies provided, chief complaint, examination, and when the patient should return for an appointment. 2. When an insurance claim is manually submitted, the date of service is inserted in Block 24A of the CMS-1500 insurance claim form. This indicates the date on which health care services were provided to the insured. More than one date of service may be listed on a claim. Also called service date .