What Is the PHQ-9? Understanding Your Depression Score

If you recently completed a depression screening and received a PHQ-9 score, you may be wondering what that number actually means for your health. Whether your score was low or high, this guide will walk you through everything you need to know — what the questionnaire measures, how it is scored, and what the results suggest about next steps.

Understanding your PHQ-9 score is not about labeling yourself or predicting the worst. It is about getting a clearer picture of how you have been feeling so that you and your provider can make informed, compassionate decisions together. Let’s break it down.

What Is the PHQ-9?

The PHQ-9, short for Patient Health Questionnaire-9, is a nine-item self-report depression screening tool developed in 1999 by Drs. Kurt Kroenke, Robert Spitzer, and Janet Williams. It was designed to be brief enough to use in busy primary care settings while still capturing the core symptoms of major depressive disorder (MDD) as defined by DSM-5 diagnostic criteria.

Because it is validated, free to use in clinical settings, and takes only a few minutes to complete, the PHQ-9 has become one of the most widely administered depression screening instruments in both primary care and psychiatric practice. You can take an interactive PHQ-9 questionnaire directly on this site. For a broader overview of depression screening tools, including how the PHQ-9 compares to other instruments, that resource covers the landscape in detail.

The 9 Questions on the PHQ-9

Each of the nine items on the PHQ-9 corresponds to a core symptom of depression. Respondents rate how often they have experienced each symptom over the past two weeks, using a scale from 0 (not at all) to 3 (nearly every day). Here is what each question covers in plain language:

• Anhedonia: Little interest or pleasure in doing things you normally enjoy.
• Depressed mood: Feeling down, hopeless, or empty.
• Sleep disturbance: Trouble falling asleep, staying asleep, or sleeping too much — symptoms also associated with insomnia.
• Fatigue: Feeling tired or having very little energy throughout the day.
• Appetite changes: Poor appetite, overeating, or significant weight changes.
• Self-worth: Feeling bad about yourself, like a failure, or like you have let others down.
• Concentration: Difficulty focusing on tasks like reading, watching TV, or making decisions.
• Psychomotor changes: Moving or speaking noticeably slower — or being so restless that others have noticed.
• Suicidal ideation: Thoughts of being better off dead, or of hurting yourself in some way.

Together, these nine items mirror the diagnostic symptom criteria that clinicians use when evaluating a patient for major depressive disorder. To learn more about the signs and symptoms of depression in detail, including how they differ across individuals, that resource provides a thorough walkthrough. You can also review the original published validation research at PMC.

How PHQ-9 Scoring Works

PHQ-9 scoring is straightforward. Each of the nine items is assigned a numeric value based on your response: 0 for “not at all,” 1 for “several days,” 2 for “more than half the days,” and 3 for “nearly every day.” The total PHQ-9 score is a simple sum of all nine responses, meaning the possible range runs from 0 (no symptoms reported) to 27 (maximum severity on every item).

There is no weighting or complex calculation involved. A higher total score reflects more frequent or more pervasive symptoms across the nine areas. Most providers calculate your score in under a minute, which is part of what makes the PHQ-9 so practical in a clinical setting.

PHQ-9 Score Interpretation

Once your total is calculated, it falls into one of five severity ranges. The table below shows the standard PHQ-9 score interpretation guidelines used by clinicians:

What Each PHQ-9 Score Range Means

Score 0 – 4: None to Minimal

A PHQ-9 score in this range suggests that depressive symptoms are either absent or very infrequent. Most people in this range do not require any clinical intervention for depression at this time. Your provider may still monitor your mood at future visits, especially if circumstances change.

Score 5 – 9: Mild Depression

A PHQ-9 score between 5 and 9 indicates mild depressive symptoms that are worth paying attention to. Providers typically adopt a watchful waiting approach at this level, checking in again at the next appointment. Lifestyle strategies such as sleep hygiene, physical activity, and stress reduction can be beneficial here.

Score 10 – 14: Moderate Depression

A PHQ-9 score of 10 or above is commonly used as the clinical threshold that warrants further evaluation and treatment discussion. At this level, symptoms are frequent enough to affect daily functioning. Your provider may recommend psychotherapy, online medication management, or a combination of both.

Score 15 – 19: Moderately Severe Depression

Scores in this range reflect significant depressive burden that is likely interfering with work, relationships, or self-care on most days. Active treatment is clearly indicated. Providers will typically discuss starting an antidepressant, initiating therapy, or both, with close follow-up monitoring.

Score 20 – 27: Severe Depression

A PHQ-9 score at this level indicates severe depression requiring prompt clinical attention. The National Institute of Mental Health recognizes that severe depression can significantly impair all areas of daily life. Immediate treatment initiation — and potentially a higher level of care — is strongly recommended.

Question 9 — The Suicide Risk Item

Item 9 on the PHQ-9 asks whether you have had thoughts of being better off dead, or of hurting yourself in some way. Any answer other than “not at all” — even “several days” — immediately triggers a more detailed clinical safety assessment, regardless of your total PHQ-9 score. This means a person with an overall score of 7 who endorses item 9 will receive focused follow-up on suicidal ideation.

Answering honestly on this item is important. Providers are trained to respond to these disclosures with care, not judgment. The purpose is to make sure you receive the right level of support.

How Accurate Is the PHQ-9?

Research supporting the PHQ-9 depression screening tool shows that at a cutoff score of 10, the instrument demonstrates approximately 88% sensitivity and 88% specificity for identifying major depressive disorder. In practical terms, this means it is quite good at identifying people who are likely depressed while minimizing false positives.

However, accuracy figures have an important caveat: the PHQ-9 is a screening tool, not a diagnostic instrument. A score above 10 does not confirm that you have clinical depression, and a score below 10 does not rule it out. PHQ-9 scoring gives your provider a structured, data-informed starting point for a conversation — not a final verdict.

Using the PHQ-9 to Track Treatment Progress

One of the most valuable uses of PHQ-9 scoring is longitudinal tracking — administering the questionnaire repeatedly over time to measure how symptoms respond to treatment. When providers re-administer the PHQ-9 at follow-up appointments, they are looking for meaningful change. A reduction of five or more points is generally considered clinically significant improvement.

For example, if your initial PHQ-9 score was 16 and your score drops to 9 after six weeks of treatment, that shift reflects genuine symptom relief. Conversely, if scores remain flat or rise, it signals that the current treatment approach may need to be adjusted. This is why tracking your PHQ-9 over time is just as important as the initial number.

Limitations of the PHQ-9

• Self-report bias: Scores depend entirely on what you report, which can be influenced by how you are feeling on a given day, social desirability, or difficulty identifying your own emotional states.
• Does not differentiate bipolar disorder: The PHQ-9 measures depressive symptoms but cannot distinguish unipolar depression from the depressive phase of bipolar disorder — an important clinical distinction that affects treatment decisions.
• Does not capture anxiety: Many people with depression also experience significant anxiety. The PHQ-9 does not assess anxiety symptoms, so providers often pair it with tools like the GAD-7.
• Requires clinical context: Medical conditions such as hypothyroidism, sleep apnea, and chronic pain can produce symptoms that elevate a PHQ-9 score without a primary mood disorder being present.

When to See a Psychiatric Provider About Your Score

If your PHQ-9 score lands at 10 or above, speaking with a psychiatric provider is a meaningful next step — especially if symptoms have persisted for two weeks or more and are affecting your ability to function. A score in the moderately severe or severe range (15 and above) warrants prompt attention, not delay.

Even if your score is in the mild range (5 to 9) but you feel like something is not right, that instinct matters. A board-certified psychiatric provider can evaluate your full picture — including personal history, co-occurring conditions, and life circumstances — to determine whether treatment is appropriate and what form it should take.

Frequently Asked Questions

Can the PHQ-9 diagnose depression?

No. The PHQ-9 is a screening instrument, not a diagnostic tool. It identifies individuals who may be experiencing depressive symptoms and prompts further clinical evaluation. Only a licensed clinician can make a formal diagnosis of major depressive disorder based on a comprehensive assessment.

How often should I take the PHQ-9?

In clinical settings, providers typically re-administer the PHQ-9 at each follow-up visit — often every four to eight weeks during active treatment. If you are monitoring your mood independently, repeating it monthly gives you a useful trend line to discuss with your provider.

Is the PHQ-9 free to use?

Yes. The PHQ-9 is free for clinical and research use without licensing fees. It was developed with the intent to be widely accessible. You can complete a free interactive PHQ-9 questionnaire on this site at any time.

What’s the difference between the PHQ-9 and PHQ-2?

The PHQ-2 is an ultra-brief two-item version that asks only about anhedonia and depressed mood. It is used as a rapid initial screen. If a person scores 3 or higher on the PHQ-2, clinicians typically follow up with the full PHQ-9 for a more complete picture of depression severity.

A high PHQ-9 score is information, not a verdict. It means your mind and body may be telling you something important — and that you deserve thoughtful, evidence-based care in response. Scores can and do improve with the right support, and millions of people have used this simple tool as the first step toward feeling meaningfully better.