ICD-10 Code I87.309 – Chronic venous hypertension (idiopathic) without complications of unspecified lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.309 – Chronic venous hypertension (idiopathic) without complications of unspecified lower extremity
What it is
This code identifies long-term venous hypertension in a lower extremity when the cause is idiopathic and no complications are documented. Use it when the record describes chronic venous congestion without a specified leg.
Clinical signs
Findings may include leg heaviness, swelling, varicose veins, skin discoloration, or edema related to venous congestion. Clinical features vary; refer to documentation.
When to use this code
Use I87.309 when the provider documents chronic venous hypertension, states it is idiopathic, and does not specify right or left lower extremity. It also fits when there are no documented complications such as ulceration or inflammation. Check documentation if the note mentions another venous disorder.
Do not use for
Do not use this code if the affected leg is specified, if another cause is documented, or if complications are present. Check documentation for venous insufficiency, ulcer, or thrombosis codes that may be more accurate.
Coding tip
Confirm both “idiopathic” and “unspecified lower extremity” in the note before assigning this code.