Thromboangiitis obliterans [Buerger's disease]

This code signifies a rare, inflammatory disease of the small and medium-sized arteries and veins, primarily affecting the limbs. It leads to occlusion of blood vessels, causing pain, ulceration, and gangrene, most commonly in the hands and feet.

Use this code for patients diagnosed with Thromboangiitis obliterans, also known as Buerger's disease. Documentation should clearly indicate the diagnosis of this specific vasculitis, often supported by clinical findings of distal ischemia, angiographic evidence, and exclusion of other causes.

• Ensure documentation specifies Buerger's disease to differentiate from other peripheral vascular diseases.
• Code any associated complications, such as gangrene (e.g., R02) or ulcers (e.g., L97.-), in addition to the primary diagnosis.
• Verify laterality (e.g., right, left, bilateral) if specified in the clinical notes, as some related codes may require it.