ICD-10 Code F43.10 – Post-traumatic stress disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F43.10 – Post-traumatic stress disorder, unspecified
What it is
F43.10 identifies post-traumatic stress disorder when the record confirms PTSD but does not specify a subtype or further detail. Use it for a documented trauma-related stress disorder without additional qualifying descriptors.
Clinical signs
Clinical features vary; refer to documentation. Typical PTSD findings include intrusive memories, avoidance of trauma reminders, negative mood or thoughts, and increased arousal such as hypervigilance or sleep disturbance.
When to use this code
Use F43.10 when the provider diagnoses PTSD and does not document a more specific form, such as acute or chronic detail. It also fits when the note confirms the disorder but lacks enough information for a more specific code. Check documentation for the exact wording.
Do not use for
Do not use this code for normal stress reactions, adjustment disorder, or anxiety without a PTSD diagnosis. If the record specifies another trauma- or stress-related disorder, code that condition instead.
Coding tip
Code only when the provider clearly documents PTSD; if the type is unclear, query or use the unspecified code only when supported.