Patient presents with symptoms consistent with Separation Anxiety Disorder (SAD), meeting DSM-5 diagnostic criteria.  The patient exhibits excessive fear or anxiety concerning separation from attachment figures, exceeding what is developmentally appropriate.  This separation anxiety manifests as significant distress when anticipating or experiencing separation from home or major attachment figures.  The patient reports persistent, excessive worry about potential harm befalling attachment figures or events that could lead to separation.  This anxiety leads to reluctance or refusal to attend school, work, or social events.  The patient experiences nightmares involving themes of separation and somatic symptoms, such as headaches and stomachaches, when separation is anticipated.  These symptoms have been present for over six months in an adult and four weeks in the child patient and cause clinically significant distress or impairment in social, academic, occupational, or other important areas of functioning.  Differential diagnoses considered include Generalized Anxiety Disorder, Panic Disorder, and Social Anxiety Disorder.  Rule-outs for medical conditions contributing to anxiety symptoms, such as hyperthyroidism, were conducted through relevant lab work.  Treatment plan includes Cognitive Behavioral Therapy (CBT) focusing on exposure therapy and relaxation techniques, psychoeducation about anxiety management, and consideration of pharmacotherapy if indicated after further evaluation and discussion of risks and benefits with the patient.  Prognosis is guardedly optimistic with consistent adherence to the treatment plan.  Follow-up appointment scheduled in two weeks to assess treatment response and adjust plan as needed.  ICD-10 code F93.0 applied.  CPT codes for evaluation and management, psychotherapy, and potential medication management will be billed accordingly.