I82.599
BillableChronic embolism and thrombosis of other specified deep vein of unspecified lower extremity
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
A chronic blood clot in another deep vein of an unspecified lower extremity when the side is not documented.
Coding Tips
- •Query provider to determine laterality if possible, as more specific codes are preferred
- •Use only when laterality cannot be determined from available documentation
Clinical Significance
Chronic deep vein thrombosis of the lower extremity (unspecified) indicates a long-standing thrombus that has organized within the venous system, often leading to post-thrombotic syndrome with chronic swelling, pain, and skin changes. This condition requires ongoing anticoagulation management and monitoring for recurrent thromboembolism and venous insufficiency. Accurate capture of chronic deep vein thrombosis is essential for risk adjustment as it reflects persistent vascular disease burden.
Documentation Requirements
- ✓Provider documentation explicitly stating 'chronic' 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
- ✓Query provider for laterality (right, left, or bilateral) when not documented
- ✓Current treatment plan including anticoagulation therapy and duration
- ✓Assessment and monitoring notes demonstrating the condition is being actively managed
- ✓Documentation of chronicity such as 'chronic,' 'old,' 'long-standing,' or history of prior acute deep vein thrombosis that has transitioned to chronic status
Commonly Confused Codes
I82.50- — Chronic embolism of unspecified deep veins of lower extremity; use 'other specified' only when documentation names a specific deep vein not listed elsewhere in the I82.5 seriesI82.51- through I82.56- — Specific named vein codes; always check if the documented vein has its own specific code before using 'other specified'I82.89- — Chronic embolism of other specified veins; use I82.59- for deep veins of the lower extremity, not the general 'other' category
Code Hierarchy
└I82Other venous embolism and thrombosis└I82.5Chronic embolism and thrombosis of deep veins of lower extremity└I82.59Chronic embolism and thrombosis of other specified deep vein of lower extremity└I82.599Chronic embolism and thrombosis of other specified deep vein of unspecified lower extremity
└I82.599Chronic embolism and thrombosis of other specified deep vein of unspecified lower extremity