Maintain case records containing all information to support eligibility, ineligibility, and benefit level determinations. Documentation shall be in sufficient detail to permit a reviewer to determine the reasonableness and accuracy of the determination. Documentation includes what action is taken, by whom, and when. Document all verbal contacts with the EU and with reference or other source, indicating the date of contact. Documentation should be recorded in the Comments screens. Refer to the Comments Chart for specific instructions on recording comments.