I77.76
BillableDissection of artery of upper 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 arm or shoulder area, which can restrict blood flow to the upper extremity.
Coding Tips
- •Specify which arm (right or left) and which specific artery if documented
- •Document whether this is spontaneous or related to trauma or underlying connective tissue disorder
Clinical Significance
Dissection of an upper extremity artery is an uncommon but clinically significant condition that can compromise blood flow to the arm and hand. This may result from trauma, repetitive motion, thoracic outlet syndrome, or connective tissue disorders. It requires vascular evaluation and carries risk of upper limb ischemia, reflecting the higher complexity associated with vascular disease with complications.
Documentation Requirements
- ✓Imaging confirmation of upper extremity arterial dissection (CT angiography, ultrasound, or conventional angiography)
- ✓Specific artery involved (subclavian, axillary, brachial, radial, or ulnar)
- ✓Laterality — right or left upper extremity
- ✓Etiology — traumatic, spontaneous, iatrogenic, or related to underlying condition
- ✓Assessment of distal perfusion and hand viability
- ✓Treatment plan including anticoagulation, surgical repair, or observation
Commonly Confused Codes
I77.77 — Dissection of artery of lower extremity: lower limb rather than upperI77.70 — Dissection of unspecified artery: use I77.76 when upper extremity is documentedI74.2 — Embolism and thrombosis of arteries of upper extremities: occlusion by embolus/thrombus, not dissectionI77.79 — Dissection of other specified artery: for arteries not classified elsewhere
Code Hierarchy
└I77Other disorders of arteries and arterioles└I77.7Other arterial dissection└I77.76Dissection of artery of upper extremity
└I77.76Dissection of artery of upper extremity