I77.77
BillableDissection of artery of lower extremity
HCC Category Mapping
V24HCC 107 — Vascular Disease with Complications
0.450ESRDHCC 107 — Vascular Disease with Complications
0.000What This Code Means
A tear in the inner lining of an artery in the leg or hip area, which can restrict blood flow to the lower extremity.
Coding Tips
- •Specify which leg (right or left) and identify the specific artery involved when documented
- •Note any associated symptoms such as pain, numbness, or claudication
Clinical Significance
Dissection of a lower extremity artery can threaten limb viability by compromising blood flow to the leg and foot. This may occur from trauma, atherosclerotic disease, or iatrogenic causes during endovascular procedures. It represents a vascular emergency requiring prompt evaluation and intervention, reflected in its mapping to the higher-weighted vascular disease with complications category.
Documentation Requirements
- ✓Imaging confirmation of lower extremity arterial dissection
- ✓Specific artery involved (femoral, popliteal, tibial, or peroneal)
- ✓Laterality — right, left, or bilateral
- ✓Assessment of limb perfusion including ankle-brachial index and pulse examination
- ✓Etiology — traumatic, spontaneous, iatrogenic, or atherosclerotic
- ✓Treatment plan including endovascular intervention, surgical repair, or anticoagulation
Commonly Confused Codes
I77.76 — Dissection of artery of upper extremity: upper limb rather than lowerI77.72 — Dissection of iliac artery: more proximal vessel, separate codeI70.2x — Atherosclerosis of native arteries of extremities: chronic atherosclerotic disease, not dissectionI74.3-I74.5 — Embolism and thrombosis of arteries of lower extremities: different mechanism