ICD-10 Code F45.4 – Pain disorders related to psychological factors (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F45.4 – Pain disorders related to psychological factors
What it is
This code identifies pain that is strongly influenced by psychological factors rather than a fully explained physical cause. Use it when the record documents a pain disorder linked to mental or emotional factors.
Clinical signs
Clinical features vary; refer to documentation. Commonly, pain is persistent, distressing, and disproportionate to objective findings, with psychological stressors or conflicts noted in the history.
When to use this code
Use F45.4 when the clinician specifically diagnoses a pain disorder related to psychological factors. It fits cases where the chart links the pain to emotional or behavioral contributors and does not support a better-defined organic pain diagnosis. Check documentation if the cause is mixed or unclear.
Do not use for
Do not use this code for pain with a clearly documented physical etiology alone. Also avoid it when the record only states pain symptoms without a diagnosed psychological pain disorder.
Coding tip
Assign this code only when the provider explicitly connects the pain to psychological factors and documents the diagnosis.