I87.012

Billable

Postthrombotic syndrome with ulcer of left lower extremity

HCC Category Mapping

V28HCC 383 — Diabetic Skin Ulcer and Severe Skin Conditions

0.517

V24HCC 107 — Vascular Disease with Complications

0.450

ESRDHCC 107 — Vascular Disease with Complications

0.000

What This Code Means

A condition that develops after a blood clot in the leg, causing an open sore or ulcer on the left lower leg that doesn't heal properly.

Coding Tips

•Verify documentation specifies left side; if bilateral or unspecified, use different code
•Ensure ulcer is documented as related to postthrombotic syndrome, not other venous conditions

Clinical Significance

Postthrombotic syndrome with ulcer of the left lower extremity represents a chronic sequela of deep vein thrombosis where permanent venous valve damage leads to chronic venous hypertension, causing skin breakdown and ulceration. This condition requires ongoing wound care, compression therapy, and close vascular monitoring, significantly increasing healthcare utilization. The presence of ulceration marks advanced disease that substantially impacts the patient's functional status and quality of life.

Documentation Requirements

✓History of deep vein thrombosis documented or referenced
✓Diagnosis of postthrombotic syndrome explicitly stated (not just chronic venous insufficiency)
✓Laterality documented (left lower extremity)
✓Ulcer presence and characteristics described (size, location, depth, drainage)
✓Signs of chronic venous changes (hyperpigmentation, lipodermatosclerosis, edema)
✓Current wound management and compression therapy plan
✓Assessment of venous reflux or obstruction if available

Commonly Confused Codes

I87.011 — Postthrombotic syndrome with ulcer of right lower extremity; verify laterality matches documentation I87.03x — Postthrombotic syndrome with ulcer AND inflammation; use when both ulcer and inflammation are documented together I83.2xx — Varicose veins with ulcer and inflammation; ensure the ulcer is attributed to postthrombotic syndrome, not primary varicose veins I87.31x — Chronic venous hypertension with ulcer; postthrombotic syndrome has a specific prior deep vein thrombosis etiology that distinguishes it from idiopathic venous hypertension L97.xxx — Non-pressure chronic ulcer of lower limb; use only when the ulcer is not attributable to postthrombotic syndrome or venous disease

Code Hierarchy

└I87Other disorders of veins └I87.0Postthrombotic syndrome └I87.01Postthrombotic syndrome with ulcer └I87.012Postthrombotic syndrome with ulcer of left lower extremity

└I87.012Postthrombotic syndrome with ulcer of left lower extremity