I82.412

Billable

Acute embolism and thrombosis of left femoral vein

HCC Category Mapping

V28HCC 267 — Vascular Disease

0.356

V24HCC 108 — Vascular Disease

0.297

ESRDHCC 108 — Vascular Disease

0.000

RxHCCHCC 215 — Pulmonary Embolism and Other Vascular Disease

0.000

What This Code Means

A blood clot that suddenly forms in the left femoral vein (the large vein in the thigh), blocking blood flow. This is a serious condition that requires immediate medical attention to prevent the clot from traveling to the lungs.

Coding Tips

•Verify laterality is documented as 'left' in the medical record before assigning this code; if bilateral or right-sided, use the appropriate code variant (I82.411 for right, I82.413 for bilateral)
•Ensure the documentation specifies 'acute' presentation; if chronic or recurrent thrombosis is documented instead, use code I82.52x series

Clinical Significance

Acute thrombosis of the femoral vein, a major proximal deep vein in the thigh, represents a high-risk deep vein thrombosis with significant potential for pulmonary embolism. Proximal deep vein thrombosis carries greater morbidity than distal clots and typically requires aggressive anticoagulation, potential catheter-directed thrombolysis, and close monitoring. Capturing this diagnosis accurately reflects the acute care needs and ongoing vascular disease risk of these patients.

Documentation Requirements

✓Clinical diagnosis of venous thrombosis or thrombophlebitis clearly documented by the treating provider
✓Diagnostic confirmation via duplex ultrasonography, CT venography, MR venography, or venography with imaging findings described
✓Current treatment plan including anticoagulation regimen with specific medication, dose, and duration
✓Documentation of acute onset with date of symptom onset or diagnosis establishing the acute nature
✓Laterality (right or left) clearly specified in provider documentation
✓Assessment of risk factors (immobility, recent surgery, malignancy, hypercoagulable state, oral contraceptive use)

Commonly Confused Codes

I82.421-I82.429 — Iliac vein thrombosis; iliac veins are more proximal (pelvic) than femoral veins I82.431-I82.439 — Popliteal vein thrombosis; popliteal vein is behind the knee, distal to the femoral vein I80.10-I80.13 — Phlebitis and thrombophlebitis of femoral vein; use when inflammatory component is documented I82.401-I82.409 — Acute DVT of unspecified deep veins of lower extremity; use only when specific vein is unknown I82.521-I82.529 — Chronic embolism of femoral vein; verify acute vs. chronic status

Code Hierarchy

└I82Other venous embolism and thrombosis └I82.4Acute embolism and thrombosis of deep veins of lower extremity └I82.41Acute embolism and thrombosis of femoral vein └I82.412Acute embolism and thrombosis of left femoral vein

└I82.412Acute embolism and thrombosis of left femoral vein