Combination of letters and/or numbers selected by individuals, reported to management, and assigned to access computer data and for security measures.

Patient’s past experiences with allergies, illnesses, hospitalizations, operations, injuries, and treatments.

Pension plan credit given for an employee’s past service before the establishment of the plan.

Total value (single sum) of the past service benefits plan beginning with the effective date of the plan.

Review and documentation of the patient’s past history, family history, and social history for the patient’s health record. When billing an evaluation and management service there must be documented review of two, or for comprehensive assessment all three areas (past, family, and/or social history) are required.