ICD-10 Code F45.0 – Somatization disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F45.0 – Somatization disorder
What it is
Somatization disorder is a somatoform condition marked by multiple physical complaints that are not fully explained by a medical illness. You should code it when the record documents this specific diagnosis.
Clinical signs
Typical findings include recurrent, varied symptoms involving several body systems, often with repeated medical visits and distress about the symptoms. Clinical features vary; refer to documentation.
When to use this code
Use F45.0 when the provider clearly diagnoses somatization disorder in the assessment, problem list, or discharge summary. It may also apply when the note describes longstanding, multiple unexplained physical complaints consistent with this disorder. Check documentation if the record uses only nonspecific terms such as “somatic complaints.”
Do not use for
Do not use this code for a confirmed medical condition causing the symptoms, or for a vague complaint without a documented diagnosis. If the note instead identifies another somatic symptom disorder, code that diagnosis instead.
Coding tip
Code F45.0 only when the clinician explicitly documents somatization disorder; otherwise, query or code the documented symptom pattern.