A PHQ-9 score of 15-19 corresponds to which category of depression?

• A. Moderate to moderately severe
• B. Mild
• C. Severe
• D. None

Answer: (A)

The score range 15–19 on the PHQ-9 reflects moderately severe depressive symptoms. This level is higher than moderate (10–14) but not yet in the severe range (20–27), and it is commonly described as moderately severe or, wording often used in exams, moderate to moderately severe. Clinically, this indicates significant symptoms with noticeable impairment in function, prompting consideration of more intensive treatment, such as adding psychotherapy to an antidepressant or adjusting the medication plan while closely monitoring safety and suicidality. By contrast, mild depression is 5–9 and severe depression is 20–27, so the 15–19 range sits clearly in the moderate-to-moderately severe territory.