F331 - Recurrent major depression of moderate severity

International Classification of Diseases

Last updated: 10/3/2025

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code indicates a diagnosis of major depressive disorder that has occurred multiple times (recurrent) and is currently at a moderate level of severity. Major depressive disorder is a mental health condition characterized by persistent feelings of sadness, hopelessness, and loss of interest in activities that typically last for at least two weeks. 'Recurrent' means you have experienced at least one previous episode of major depression, followed by a period of at least two months without significant depressive symptoms, and now you're experiencing another episode. 'Moderate' severity means the depression significantly impacts your daily functioning and quality of life, but you can still perform most daily activities with some difficulty. This diagnosis is typically made during an office visit with a mental health professional or primary care physician who will assess your symptoms, medical history, and current functioning level.

Additional Information

This is a diagnostic code used for billing and medical record purposes. Treatment typically involves a combination of therapy, medication, and lifestyle changes. Recovery is possible with appropriate treatment and support.

Category

Mental Health/Psychiatric Disorders

Medical Specialty

Psychiatry, Psychology, Primary Care

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Clinical assessment by qualified healthcare provider
  • Symptom evaluation meeting diagnostic criteria
  • History of previous depressive episode(s)
  • Rule out other medical conditions

What to Expect After

  • Regular monitoring appointments
  • Medication management if prescribed
  • Psychotherapy/counseling sessions
  • Safety assessment and planning
  • Lifestyle and self-care recommendations
  • Possible referral to mental health specialist

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

Want This Level of Detail on All Your Claims?

Get detailed explanations for every medical code on your Medicare bills. Currently supporting Medicare only.