The case number and date are essential in a medico-legal record because they ensure accurate identification and chronological documentation of the patient's medical history. This information is critical for legal accountability, continuity of care, and audit purposes. Properly dated records provide a clear timeline of medical events, which is vital when reviewing clinical decisions or resolving disputes. Without these details, the legal validity of the record may be compromised, making it difficult to verify treatments or outcomes. Hence, case number and date serve as key elements anchoring the record within a legal framework.

Reference: Principles and Practice of Forensic Medicine, Reddy KSN, 6th Edition.