I82.539
BillableChronic embolism and thrombosis of unspecified popliteal vein
HCC Category Mapping
What This Code Means
A blood clot that has formed and persists in a popliteal vein (vein behind the knee), with the specific side not specified.
Coding Tips
- •Use this code only when laterality is not documented; if left or right is specified, use the more specific bilateral or unilateral codes.
- •Popliteal vein thrombosis is clinically significant and may require anticoagulation therapy documentation.
Clinical Significance
Chronic popliteal vein thrombosis involves a persistent clot in the major vein behind the knee, which serves as the transition point between proximal and distal deep venous systems. This location is clinically significant because popliteal vein thrombosis carries meaningful risk of post-thrombotic syndrome and may impair venous return from the entire lower leg. Accurate documentation of chronic popliteal vein thrombosis is important for capturing vascular disease complexity in risk adjustment.
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
- ✓Specific vein location documented (e.g., popliteal)
- ✓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