ScoreBandWhat it usually means in practice
0–4MinimalOrdinary ups and downs. No treatment indicated on this measure alone.
5–9MildWorth watching. Many people repeat the questionnaire in two weeks to see the direction.
10–14ModerateThe threshold where most clinicians open a fuller conversation. Therapy is a common first step.
15–19Moderately severeActive treatment is usually recommended, often therapy plus a medical consult.
20–27SevereWorth getting an appointment soon rather than someday.