I82.419

Billable

Acute embolism and thrombosis of unspecified 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 femoral vein (the large vein in the thigh) on an unspecified side of the body. This is a serious condition that can block blood flow in the leg and requires immediate medical attention.

Coding Tips

•Verify laterality in the medical record - if the side (left or right) is documented, use the more specific code I82.41- instead of the unspecified code I82.419
•Ensure acute onset is documented in the clinical notes to distinguish from chronic thrombosis codes (I82.5-), as this affects code selection and clinical management

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 documentation should be sought; if unavailable, document the reason laterality cannot be determined
✓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 └I82.419Acute embolism and thrombosis of unspecified femoral vein

└I82.419Acute embolism and thrombosis of unspecified femoral vein