Acute embolism and thrombosis of left calf muscular vein

This diagnosis code signifies the sudden blockage of a muscular vein in the left calf due to an embolus (a traveling clot) or a thrombus (a stationary clot). This condition leads to impaired blood flow and can cause acute pain, swelling, and tenderness in the affected calf.

Use this code when documentation clearly indicates an acute venous occlusion specifically affecting a muscular vein of the left calf. Supporting documentation should include physician notes detailing the acute onset of symptoms and diagnostic findings (e.g., ultrasound, venography) confirming the presence and location of the embolism or thrombosis.

• Differentiate between acute and chronic conditions; this code is strictly for acute presentations.
• Ensure the documentation specifies "muscular vein" and not a superficial or deep vein of the calf, as these have different codes.
• Verify laterality (left calf) is explicitly stated in the medical record.