I80.219
BillablePhlebitis and thrombophlebitis of unspecified iliac vein
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
Inflammation and blood clot formation in an unspecified iliac vein, which is a major vein in the pelvis and lower abdomen.
Coding Tips
- •Clarify laterality with the provider (right, left, or bilateral) as this code indicates unspecified side
- •The iliac vein is a proximal deep vein; ensure documentation supports this location rather than more distal vessels
Clinical Significance
Phlebitis and thrombophlebitis of the unspecified iliac vein represents proximal deep vein thrombosis in one of the largest deep veins, carrying high risk for significant pulmonary embolism. Iliac vein thrombosis often involves more extensive clot burden than distal deep vein thrombosis and may be associated with May-Thurner syndrome or pelvic pathology. This represents a high-acuity vascular condition requiring aggressive anticoagulation and potential interventional radiology involvement.
Documentation Requirements
- ✓Imaging confirmation (CT venography, magnetic resonance venography, or duplex ultrasound with iliac visualization)
- ✓Laterality — unspecified iliac vein documented
- ✓Assessment for May-Thurner syndrome or external compression
- ✓Evaluation for concurrent pulmonary embolism
- ✓Anticoagulation plan and consideration for catheter-directed thrombolysis or inferior vena cava filter
- ✓Underlying risk factors including pelvic malignancy, recent surgery, or thrombophilia
- ✓Acuity — acute vs. chronic with any post-thrombotic changes
Commonly Confused Codes
I80.10-I80.13 — Femoral vein thrombophlebitis: different, more distal veinI82.42x — Acute embolism and thrombosis of iliac vein: verify correct code series for the clinical contextI80.20x — Unspecified deep vessels: less specific; use I80.21x when iliac vein is documentedI87.1 — Compression of vein: use for external compression without thrombosis
Code Hierarchy
└I80Phlebitis and thrombophlebitis└I80.2Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremities└I80.21Phlebitis and thrombophlebitis of iliac vein└I80.219Phlebitis and thrombophlebitis of unspecified iliac vein
└I80.219Phlebitis and thrombophlebitis of unspecified iliac vein