I82.4Z3
BillableAcute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral
HCC Category Mapping
V28HCC 267 — Vascular Disease
0.356V24HCC 108 — Vascular Disease
0.297ESRDHCC 108 — Vascular Disease
0.000RxHCCHCC 215 — Pulmonary Embolism and Other Vascular Disease
0.000What This Code Means
Blood clots that suddenly form in unspecified deep veins of the lower portions of both legs.
Coding Tips
- •Distal refers to calf veins and vessels below the knee
- •Use bilateral code only when both distal lower extremities are affected
Clinical Significance
Acute deep vein thrombosis of the distal lower extremity (unspecified) is a serious vascular emergency that carries immediate risk of pulmonary embolism if the clot dislodges and travels to the lungs. This condition requires urgent anticoagulation therapy and close monitoring to prevent life-threatening complications. Accurate coding of acute deep vein thrombosis captures significant vascular disease burden for risk adjustment and signals high-acuity care needs.
Documentation Requirements
- ✓Provider documentation explicitly stating 'acute' deep vein thrombosis (not assumed from duration of treatment)
- ✓Clinical evidence supporting the diagnosis such as duplex ultrasound, venography, or other imaging results
- ✓Query provider for specific vein location when possible
- ✓Documentation confirming bilateral involvement (both extremities affected)
- ✓Current treatment plan including anticoagulation therapy and duration
- ✓Assessment and monitoring notes demonstrating the condition is being actively managed
Commonly Confused Codes
I82.5Z3 — Chronic version of the same location; use the acute code only when the thrombosis is a new or recent event, not a long-standing conditionI82.40- series — Acute deep vein thrombosis of unspecified deep veins of lower extremity (not specified as distal); use the 4Z series when documentation specifies distal locationI80.2- — Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremities; this describes inflammation of the vein wall with thrombosis, not just thrombosis alone
Code Hierarchy
└I82Other venous embolism and thrombosis└I82.4Acute embolism and thrombosis of deep veins of lower extremity└I82.4ZAcute embolism and thrombosis of unspecified deep veins of distal lower extremity└I82.4Z3Acute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral
└I82.4Z3Acute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral