When an unemancipated minor child gives consent for the prevention, diagnosis, or treatment of pregnancy, alcohol or substance abuse, emotional disturbance, or venereal disease or other diseases reportable under G.S. 130A-134, a physician may not disclose information concerning the minor’s treatment to the minor’s parent, guardian, or custodian without the minor’s consent unless notification is essential to the minor’s life or health or the minor’s parent, guardian, or custodian contacts the physician regarding the treatment.