ICD-10 Code I83.021 – Varicose veins of left lower extremity with ulcer of thigh (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I83.021 – Varicose veins of left lower extremity with ulcer of thigh
What it is
This code identifies varicose veins in the left lower extremity when a venous ulcer is present on the thigh. It reflects chronic venous insufficiency with skin breakdown linked to abnormal superficial vein function.
Clinical signs
Typical findings include visible, enlarged tortuous veins and an ulcer on the left thigh with features suggesting venous disease. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents varicose veins of the left leg and an associated ulcer located on the thigh. The ulcer must be linked to the varicose vein condition, not described as traumatic, diabetic, or pressure-related. Check documentation if laterality or ulcer site is unclear.
Do not use for
Do not use this code if the ulcer is on a different site, if the varicose veins are on the right leg, or if the documentation does not connect the ulcer to varicose veins. Check documentation.
Coding tip
Verify both laterality and ulcer location in the note before assigning I83.021.