ICD-10 Code I87.329 – Chronic venous hypertension (idiopathic) with inflammation of unspecified lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.329 – Chronic venous hypertension (idiopathic) with inflammation of unspecified lower extremity
What it is
This code identifies long-term venous hypertension in a lower extremity when the cause is idiopathic and inflammation is documented. Use it for unspecified laterality when the record does not state right or left.
Clinical signs
Clinical features may include chronic leg swelling, skin redness, tenderness, or inflammatory changes related to venous disease. Clinical features vary; refer to documentation.
When to use this code
Use I87.329 when the provider documents chronic venous hypertension, notes inflammation, and does not identify a specific leg. It fits encounters focused on chronic venous disease with inflammatory findings, not acute infection. Make sure the record supports an idiopathic cause.
Do not use for
Do not use this code if the laterality is documented, if venous hypertension is not stated, or if the condition is due to another specified cause. Check documentation for a more precise code.
Coding tip
Confirm both inflammation and unspecified lower extremity before assigning this code.