Chr emblsm and thombos unsp deep vn of left prox low extrm

This code signifies the presence of a persistent blood clot within the deep venous system of the left upper leg or hip region, where the specific type of deep vein is not documented. This condition is chronic, indicating it has been present for an extended period, and can lead to impaired venous return and potential post-thrombotic syndrome.

Use this code when documentation confirms a chronic deep vein thrombosis (DVT) or embolism affecting the left proximal lower extremity, and the specific deep vein (e.g., femoral, popliteal) is not specified. This is appropriate for patients presenting with long-standing symptoms such as swelling, pain, or skin changes attributed to an old DVT in this region.

• Ensure documentation explicitly states "chronic" and "left proximal lower extremity" to support this code.
• Avoid using this code if a more specific deep vein is identified; instead, select the appropriate code from the I82.5Y- series.
• Consider sequencing this code after any acute DVT if the chronic condition is a sequela, or as a primary diagnosis if it's the focus of the encounter.