ICD-10 Code I87.323 – Chronic venous hypertension (idiopathic) with inflammation of bilateral lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.323 – Chronic venous hypertension (idiopathic) with inflammation of bilateral lower extremity
What it is
This code identifies long-standing venous hypertension in both legs that is not linked to a known secondary cause, with associated inflammation. It describes chronic vein-related pressure changes affecting the bilateral lower extremities.
Clinical signs
Typical findings include bilateral leg swelling, skin inflammation, and chronic venous stasis changes. Clinical features vary; refer to documentation for evidence of idiopathic venous hypertension and lower-extremity inflammation.
When to use this code
Use this code when the provider documents chronic venous hypertension as idiopathic and specifies inflammation in both lower extremities. The record should clearly support bilateral involvement and the chronic venous nature of the condition. Check documentation if the cause or laterality is unclear.
Do not use for
Do not use this code for venous disease with a documented secondary cause, or when inflammation is not specified. Avoid it if the condition is unilateral or if the chart does not support chronic venous hypertension.
Coding tip
Confirm both the idiopathic etiology and bilateral lower-extremity involvement before assigning I87.323.