Chronic embolism and thrombosis of unspecified tibial vein

This code describes a long-standing blockage within an unspecified tibial vein due to a blood clot. This condition impairs venous blood flow in the lower leg, potentially leading to chronic pain, swelling, and skin changes. It signifies a persistent rather than acute thrombotic event.

Use this code when documentation specifies a chronic, rather than acute, embolism or thrombosis affecting an unspecified tibial vein. This diagnosis is typically supported by imaging studies (e.g., ultrasound, venography) demonstrating an older, organized clot and clinical signs of chronic venous insufficiency.

• Distinguish carefully between acute (I82.4-) and chronic (I82.5-) conditions; documentation must clearly state "chronic."
• Ensure the specific tibial vein (anterior, posterior, or peroneal) is not identified; if specified, use the more precise code (e.g., I82.51-, I82.52-, I82.53-).
• Always code the laterality if documented (e.g., right, left, bilateral), as this code implies unspecified laterality.