ICD-10 Code F45.9 – Somatoform disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F45.9 – Somatoform disorder, unspecified
What it is
F45.9 identifies a somatoform disorder when physical symptoms are present and no more specific somatic symptom-related diagnosis is documented. Use it when the chart supports a somatoform presentation but does not name a subtype.
Clinical signs
Clinical features vary; refer to documentation. Records may describe persistent physical complaints, distress about symptoms, and repeated medical evaluation without a clear medical explanation.
When to use this code
Use this code when the clinician documents somatoform disorder or an unspecified somatoform presentation. It fits cases where symptoms are real to the patient, but the note does not support a more specific diagnosis.
Apply it only when the provider links the symptoms to a somatoform condition. If the documentation is vague, check documentation before assigning a code.
Do not use for
Do not use F45.9 for a clearly documented specific somatic symptom disorder, anxiety disorder, or a medical condition causing the symptoms. Check documentation if the diagnosis is uncertain.
Coding tip
Code the most specific documented diagnosis; if the note says only “somatoform disorder” without detail, F45.9 is appropriate.