I70.313 Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs

ICD10CM code

#### Name of the Condition
- Atherosclerosis of Unspecified Type of Bypass Graft(s) of the Extremities with Intermittent Claudication, Bilateral Legs
- ICD-10 Code: I70.313

#### Summary
Atherosclerosis of the extremities refers to the build-up of plaques in the blood vessels that supply the legs. When these vessels are bypassed, they can also become affected by atherosclerosis. This can lead to intermittent claudication, characterized by pain and cramping in the legs during physical activity due to inadequate blood flow.

#### Causes
- Accumulation of fatty deposits and cholesterol in blood vessels.
- Lifestyle factors such as smoking, a high-fat diet, and lack of exercise.
- Genetic predisposition.

#### Risk Factors
- Age: Higher risk for older populations.
- Family history of cardiovascular diseases.
- High blood pressure, high cholesterol, and diabetes.
- Smoking and obesity.

#### Symptoms
- Pain or cramping in the legs or buttocks during activities like walking, which subsides with rest.
- Numbness, weakness, or a feeling of heaviness in the legs.
- Coldness in the lower leg or foot.

#### Diagnosis
- Physical examination assessing pulse in the legs.
- Ankle-Brachial Index (ABI) test to measure blood pressure differences in the ankles and arms.
- Ultrasound or angiography to visualize blood flow in the leg arteries.

#### Treatment Options
- Medications: Statins to lower cholesterol, antiplatelets to reduce clotting.
- Lifestyle changes: Smoking cessation, dietary adjustments, and exercise.
- Surgical options: Angioplasty or bypass surgery to restore adequate blood flow.

#### Prognosis and Follow-Up
- With proper management, patients can typically maintain an active lifestyle.
- Regular follow-up with healthcare providers is essential to monitor progress and adjust treatments as necessary.

#### Complications
- Increased risk of severe cardiovascular events like heart attack or stroke.
- Critical limb ischemia, leading to tissue damage and potential amputation if untreated.

#### Lifestyle & Prevention
- Maintain a healthy diet low in saturated fats and cholesterol.
- Engage in regular physical activity and manage weight.
- Avoid smoking and limit alcohol consumption.

#### When to Seek Professional Help
- Sudden increase in leg pain or discomfort, or development of new symptoms like leg ulcers or changes in skin color.
- Any signs of infection or wounds on the limbs that don't heal properly.

#### Additional Resources
- American Heart Association: [Atherosclerosis](https://www.heart.org/en/health-topics/cholesterol/about-cholesterol/atherosclerosis)
- National Institutes of Health: [Peripheral Artery Disease](https://www.nhlbi.nih.gov/health-topics/peripheral-artery-disease)

#### Tips for Medical Coders
- Ensure accurate differentiation between atherosclerosis of native vessels and bypass grafts.
- Verify bilateral symptoms are documented to avoid coding errors.
- Consult clinical documentation to identify any associated complications or underlying conditions.

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