If you’ve recently completed a PHQ-9 (depression) or GAD-7 (anxiety) screening—whether at a doctor’s office, therapy session, or online—you may be wondering what your score actually means. This guide, written by a board-certified psychiatrist, explains each severity level in plain language, what treatment options are typically recommended, and when a psychiatric evaluation may be warranted.
Quick Reference: The PHQ-9 measures depression severity (scored 0–27). The GAD-7 measures anxiety severity (scored 0–21). Both are validated screening tools used worldwide in clinical practice.
PHQ-9: Depression Screening
What Is the PHQ-9?
The Patient Health Questionnaire-9 (PHQ-9) is a nine-question screening tool used to assess the severity of depressive symptoms. Each question corresponds to one of the nine diagnostic criteria for major depressive disorder as defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). It was developed by Drs. Robert Spitzer, Janet Williams, and Kurt Kroenke and has been validated in numerous clinical studies.
The PHQ-9 is widely used in primary care offices, psychiatric practices, therapy sessions, and research settings. It is not a diagnostic tool on its own—rather, it provides a standardized way to measure symptom severity and track changes over time.
How the PHQ-9 Is Scored
For each of the nine questions, you rate how often you’ve been bothered by a specific symptom over the past two weeks:
- 0 = Not at all
- 1 = Several days
- 2 = More than half the days
- 3 = Nearly every day
Scores are summed for a total between 0 and 27.
View the 9 PHQ-9 Questions
Over the last 2 weeks, how often have you been bothered by any of the following problems?
- Little interest or pleasure in doing things
- Feeling down, depressed, or hopeless
- Trouble falling or staying asleep, or sleeping too much
- Feeling tired or having little energy
- Poor appetite or overeating
- Feeling bad about yourself—or that you are a failure or have let yourself or your family down
- Trouble concentrating on things, such as reading the newspaper or watching television
- Moving or speaking so slowly that other people could have noticed? Or the opposite—being so fidgety or restless that you have been moving around a lot more than usual
- Thoughts that you would be better off dead, or of hurting yourself in some way
0 = Not at all | 1 = Several days | 2 = More than half the days | 3 = Nearly every day
PHQ-9 Score Interpretation
| Score Range | Severity | Clinical Interpretation & Recommended Action |
|---|---|---|
| 0–4 | Minimal Depression | Symptoms are within the normal range. Formal treatment is generally not indicated. Continue healthy habits—regular sleep, exercise, social connection—and monitor for any changes. Rescreen if new symptoms emerge. |
| 5–9 | Mild Depression | Some depressive symptoms are present but may not yet significantly impair daily functioning. Watchful waiting is appropriate, along with lifestyle modifications and consideration of counseling or therapy. Reassess in 2–4 weeks to determine whether symptoms are resolving or worsening. |
| 10–14 | Moderate Depression | Treatment is recommended. Evidence-based psychotherapy (such as CBT or interpersonal therapy) and/or medication should be considered. This is often the threshold where a psychiatric evaluation adds significant value—particularly to assess whether medication may be beneficial and to rule out other contributing conditions. Learn more about when medication may help. |
| 15–19 | Moderately Severe Depression | Active treatment is strongly recommended. Research consistently shows that a combination of therapy and medication is most effective at this severity level. Functional impairment—difficulty with work, relationships, or daily tasks—is common. A psychiatric evaluation is important to develop a comprehensive treatment plan. Recognize when current treatment isn’t working. |
| 20–27 | Severe Depression | Immediate treatment is necessary. Medication is typically essential at this level, and psychiatric evaluation is strongly recommended. A thorough safety assessment should be completed. Hospitalization may be considered if there is imminent risk. Combination treatment (therapy + medication) provides the best outcomes. |
Critical Note About Question 9 (Suicidal Thoughts): Question 9 asks about thoughts of self-harm or being better off dead. Any positive response to this question requires immediate clinical attention, regardless of the total score. Even a score of 1 (“several days”) on this item warrants a thorough safety assessment. If you or someone you know is in crisis, contact the 988 Suicide & Crisis Lifeline by calling or texting 988.
Important Considerations for PHQ-9 Scores
- Screening, not diagnosis: The PHQ-9 identifies symptoms consistent with depression. A clinical interview is needed for a formal diagnosis, as symptoms may be caused by medical conditions (thyroid disorders, anemia, sleep apnea), medications, substance use, or other psychiatric conditions.
- Cultural factors: Depression manifests differently across cultures. Some individuals may report primarily physical symptoms (pain, fatigue, digestive issues) rather than emotional ones, potentially leading to lower PHQ-9 scores despite significant distress.
- Tracking over time: The PHQ-9 is most valuable when administered repeatedly. A change of 5 or more points is generally considered clinically significant and can help you and your provider assess whether treatment is working.
GAD-7: Anxiety Screening
What Is the GAD-7?
The Generalized Anxiety Disorder 7-item scale (GAD-7) is a seven-question screening tool designed to assess the severity of generalized anxiety symptoms. Developed by Drs. Robert Spitzer, Kurt Kroenke, Janet Williams, and Bernd Löwe, it has been extensively validated and is one of the most widely used anxiety screening measures in clinical practice.
Like the PHQ-9, the GAD-7 is a screening instrument—not a standalone diagnostic tool. It helps clinicians identify individuals who may benefit from further evaluation and tracks symptom changes during treatment.
How the GAD-7 Is Scored
For each of the seven questions, you rate how often you’ve been bothered by a specific symptom over the past two weeks:
- 0 = Not at all
- 1 = Several days
- 2 = More than half the days
- 3 = Nearly every day
Scores are summed for a total between 0 and 21.
View the 7 GAD-7 Questions
Over the last 2 weeks, how often have you been bothered by any of the following problems?
- Feeling nervous, anxious, or on edge
- Not being able to stop or control worrying
- Worrying too much about different things
- Trouble relaxing
- Being so restless that it is hard to sit still
- Becoming easily annoyed or irritable
- Feeling afraid, as if something awful might happen
0 = Not at all | 1 = Several days | 2 = More than half the days | 3 = Nearly every day
GAD-7 Score Interpretation
| Score Range | Severity | Clinical Interpretation & Recommended Action |
|---|---|---|
| 0–4 | Minimal Anxiety | Anxiety symptoms are within the normal range. Continue self-care strategies: regular exercise, adequate sleep, stress management techniques, and healthy boundaries. Monitor for any increase in symptoms. |
| 5–9 | Mild Anxiety | Noticeable anxiety is present. Consider counseling or therapy, particularly evidence-based approaches such as cognitive behavioral therapy (CBT). Stress management techniques, mindfulness, regular exercise, and structured relaxation practices may also help. Reassess in 2–4 weeks. Read our comprehensive guide to anxiety disorders. |
| 10–14 | Moderate Anxiety | Treatment is recommended. Therapy (especially CBT, which has the strongest evidence base for anxiety) and/or medication should be considered. This severity level often causes meaningful interference with daily activities, concentration, and sleep. A psychiatric evaluation can help determine the best treatment approach. Learn more about medication options. |
| 15–21 | Severe Anxiety | Active treatment is strongly recommended. At this level, anxiety typically causes significant impairment across multiple life domains. Medication evaluation is important, and psychiatric consultation is recommended. Combination treatment (therapy + medication) generally produces the best outcomes. Know the signs that your current approach may need adjustment. |
Important Considerations for GAD-7 Scores
- Designed for generalized anxiety: The GAD-7 specifically screens for generalized anxiety disorder. Other anxiety conditions—panic disorder, social anxiety disorder, specific phobias, obsessive-compulsive disorder (OCD), and post-traumatic stress disorder (PTSD)—may not produce elevated GAD-7 scores even when clinically significant. If you experience anxiety that doesn’t seem captured by these seven questions, discuss this with your provider.
- Overlap with medical conditions: Symptoms like restlessness, difficulty relaxing, and irritability can be caused or worsened by medical conditions including hyperthyroidism, cardiac arrhythmias, caffeine overuse, or medication side effects. A thorough evaluation should consider these possibilities.
- Tracking progress: Like the PHQ-9, the GAD-7 is valuable for measuring treatment response over time. A change of 4 or more points is generally considered clinically significant.
When Both Depression and Anxiety Scores Are Elevated
It is extremely common for depression and anxiety to occur together. Research shows that approximately 60% of individuals with major depression also meet criteria for an anxiety disorder, and vice versa. If both your PHQ-9 and GAD-7 scores are elevated, this is not unusual—but it does have important treatment implications.
Why Comorbidity Matters
- Compounding effect: When depression and anxiety co-occur, each condition tends to be more severe and harder to treat than when either appears alone. Anxiety can fuel depressive rumination, while depression can lower resilience to anxiety triggers.
- Treatment planning: Certain therapies (such as CBT) and medications (particularly SSRIs and SNRIs) can effectively address both conditions simultaneously. A treatment plan that targets only one condition while ignoring the other often produces incomplete results.
- Functional impairment: Comorbid depression and anxiety typically cause greater impairment in work performance, relationships, and daily functioning than either condition alone. Early, comprehensive treatment can prevent a downward spiral.
The Role of Psychiatric Medication
When therapy alone isn’t producing sufficient improvement—particularly when both PHQ-9 and GAD-7 scores remain in the moderate-to-severe range—psychiatric medication often plays a critical role. A psychiatrist can evaluate the full clinical picture, consider potential contributing factors (sleep disorders, medical conditions, substance use), and recommend a targeted medication strategy.
This doesn’t mean medication is always necessary. For mild symptoms, therapy and lifestyle changes may be sufficient. But for moderate-to-severe presentations, especially with comorbid depression and anxiety, the evidence strongly supports a combined approach. Read our detailed guide on when to consider psychiatric medication.
When to Seek a Psychiatric Evaluation
A psychiatric evaluation goes beyond screening. It involves a comprehensive clinical interview, diagnostic assessment, medical history review, and development of an individualized treatment plan. Consider scheduling an evaluation if any of the following apply:
- Scores in the moderate-to-severe range: PHQ-9 of 10 or higher, GAD-7 of 10 or higher, or both.
- Symptoms persisting despite therapy: If you’ve been in counseling for 8–12 weeks without meaningful improvement, a psychiatric evaluation can identify barriers to progress and determine whether medication may help. Learn more about when therapy alone may not be enough.
- Functional impairment: Difficulty performing at work, maintaining relationships, completing daily tasks, or caring for yourself or dependents.
- Sleep disruption: Chronic insomnia, hypersomnia, or sleep quality so poor that it affects daytime functioning.
- Safety concerns: Any thoughts of self-harm or suicide, regardless of PHQ-9 total score.
- Worsening trajectory: Symptoms that are getting progressively worse rather than stabilizing or improving.
- Complex clinical picture: History of trauma, substance use, multiple psychiatric diagnoses, or family history of mental illness.
Ready to Take the Next Step?
Luminous Vitality Behavioral Health provides comprehensive psychiatric evaluations for adults experiencing depression, anxiety, and related conditions. Dr. Ronald Lee is a board-certified psychiatrist serving patients throughout Massachusetts via telehealth.
Private pay / out-of-network. Many patients receive 60–80% reimbursement through PPO/EPO plans.
Important Disclaimers
- The PHQ-9 and GAD-7 are screening tools, not diagnostic instruments. A high score suggests the presence of symptoms but does not constitute a clinical diagnosis. Only a qualified mental health professional can make a formal diagnosis after a comprehensive evaluation.
- This page is provided for educational purposes only and does not constitute medical advice. Always discuss your screening results with your healthcare provider.
- Individual circumstances vary. Treatment recommendations listed above reflect general clinical guidelines and may not apply to every situation.
- If you are experiencing suicidal thoughts or a mental health crisis, please contact the 988 Suicide & Crisis Lifeline (call or text 988), go to your nearest emergency room, or call 911. For a comprehensive list of crisis hotlines, mobile crisis teams, and specialty resources, see our Massachusetts Mental Health Crisis Resources directory.
Last reviewed by Dr. Ronald Lee, MD — Board-Certified Psychiatrist — April 2026. The PHQ-9 was developed by Drs. Spitzer, Williams, & Kroenke (Pfizer Inc.). The GAD-7 was developed by Drs. Spitzer, Kroenke, Williams, & Löwe. Both instruments are in the public domain.
