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I70.209
ICD-10-CM
Atherosclerosis of Iliac Artery

Learn about atherosclerosis of the iliac artery, also known as iliac artery stenosis or peripheral artery disease of the iliac artery. This page covers diagnosis, treatment, and medical coding for iliac artery disease, providing information for healthcare professionals, clinical documentation specialists, and medical coders. Find accurate and relevant information on managing and coding this condition.

Also known as

Iliac Artery Stenosis
Peripheral Artery Disease of Iliac Artery
iliac artery disease
+1 more

Diagnosis Snapshot

Key Facts
  • Definition : Narrowing of iliac arteries, reducing blood flow to the legs and feet.
  • Clinical Signs : Leg pain or cramping (claudication), especially during exercise, coolness, numbness, or weakness in legs or feet.
  • Common Settings : Vascular clinics, cardiology, interventional radiology, primary care.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC I70.209 Coding
I70-I79

Diseases of arteries, arterioles and capillaries

Covers various arterial diseases, including atherosclerosis.

I70

Atherosclerosis

Specifically relates to atherosclerosis in different body locations.

I25.1

Atherosclerotic heart disease

While focused on the heart, often coexists with peripheral atherosclerosis.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the atherosclerosis specified as due to diabetes?

  • Yes

    Is the iliac artery stenosis/occlusion specified as with gangrene?

  • No

    Is the iliac artery stenosis/occlusion specified as with gangrene?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Narrowing of iliac arteries, reducing leg blood flow.
Narrowing of femoral artery, reducing leg blood flow.
Narrowing of peripheral arteries, reducing blood flow to limbs.

Documentation Best Practices

Documentation Checklist
  • Document iliac artery location (right, left, or bilateral).
  • Specify disease severity (e.g., mild, moderate, severe stenosis).
  • Record symptoms (e.g., claudication, rest pain, ischemic ulcer).
  • Note diagnostic methods (e.g., ABI, duplex ultrasound, angiography).
  • Include ICD-10 code I70.2 (Atherosclerosis of iliac artery).

Coding and Audit Risks

Common Risks
  • Laterality Miscoding

    Missing or incorrect laterality (right, left, bilateral) for iliac artery atherosclerosis can lead to inaccurate coding and claims.

  • Specificity Undercoding

    Coding to a generic atherosclerosis code without specifying iliac artery involvement fails to capture disease severity for accurate reimbursement.

  • PAD vs. Atherosclerosis

    Incorrectly coding PAD without specifying underlying atherosclerosis of the iliac artery can misrepresent the patient's condition and impact quality reporting.

Mitigation Tips

Best Practices
  • Document PAD severity using Rutherford classification for accurate ICD-10 coding.
  • Specify iliac artery location (right, left, or bilateral) for improved CDI.
  • Record symptom details (claudication, rest pain) for precise diagnosis coding.
  • Assess and document ankle-brachial index (ABI) for PAD severity and compliance.
  • Implement regular follow-up for disease progression monitoring and risk management.

Clinical Decision Support

Checklist
  • Verify intermittent claudication symptoms (leg pain with exercise)
  • Check for absent or diminished femoral pulses
  • Review ABI measurement (ankle-brachial index) < 0.9
  • Assess for risk factors: smoking, diabetes, hypertension
  • Consider imaging: Duplex ultrasound, CTA, MRA if indicated

Reimbursement and Quality Metrics

Impact Summary
  • ICD-10 I70.2 impacts MS-DRG assignment and reimbursement for atherectomy, angioplasty, stenting procedures.
  • Accurate coding of iliac artery atherosclerosis impacts quality reporting metrics for PAD treatment.
  • Coding variations for iliac stenosis affect hospital reimbursement and physician profiling.
  • Specificity in documentation (e.g., laterality, stenosis severity) improves coding accuracy and risk adjustment.

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Frequently Asked Questions

Common Questions and Answers

Q: What are the most effective diagnostic imaging modalities for confirming suspected atherosclerosis of the iliac artery in a patient with lower extremity claudication?

A: In patients presenting with lower extremity claudication suggestive of iliac artery atherosclerosis, several imaging modalities can confirm the diagnosis and assess the extent of the disease. Duplex ultrasound is often the initial non-invasive test, offering a cost-effective way to visualize blood flow and identify stenosis. However, for more detailed anatomical assessment and precise measurement of stenosis severity, computed tomography angiography (CTA) and magnetic resonance angiography (MRA) are preferred. CTA provides excellent spatial resolution and can visualize calcifications, while MRA offers a radiation-free alternative, particularly beneficial for patients with chronic kidney disease or contrast allergies. The choice between CTA and MRA depends on patient-specific factors and institutional resources. Explore how these imaging techniques compare in sensitivity and specificity for iliac artery stenosis diagnosis. Consider implementing a standardized imaging protocol for optimal evaluation of suspected peripheral artery disease.

Q: How do I differentiate iliac artery stenosis from other potential causes of lower extremity pain, such as lumbar spinal stenosis or hip osteoarthritis, in a clinical setting?

A: Differentiating iliac artery stenosis from other conditions causing lower extremity pain, such as lumbar spinal stenosis or hip osteoarthritis, requires a comprehensive clinical approach. While all three can manifest as pain during exertion, key distinctions exist. Iliac artery stenosis pain, also known as claudication, is typically described as cramping or aching in the buttock, thigh, or calf muscles that is reliably reproduced with exercise and relieved with rest. Lumbar spinal stenosis pain often radiates down the leg and is exacerbated by standing or walking and relieved by leaning forward or sitting. Hip osteoarthritis pain is typically localized to the groin, thigh, or buttock and worsens with weight-bearing activities. A thorough physical exam, including palpation of peripheral pulses and assessment of neurologic function, should be performed. Furthermore, incorporating the patient's medical history, risk factors for atherosclerosis, and imaging findings (e.g., duplex ultrasound, CTA, MRA) is crucial for accurate diagnosis. Learn more about the specific clinical features and diagnostic criteria for each condition to avoid misdiagnosis and ensure appropriate management.

Quick Tips

Practical Coding Tips
  • Code I70.209 for unspecified iliac atherosclerosis
  • Query PAD severity if undocumented
  • Check for laterality (right/left)
  • Review for hypertension (I10) codes
  • Document stenosis percentage if known

Documentation Templates

Patient presents with symptoms suggestive of iliac artery atherosclerosis, including intermittent claudication characterized by lower extremity pain, cramping, or numbness with exertion, relieved by rest.  The patient may also report buttock claudication, diminished femoral pulses, and cool lower extremities.  Risk factors for peripheral artery disease (PAD) including smoking history, hyperlipidemia, hypertension, diabetes mellitus, and family history were assessed.  Physical examination findings include decreased or absent distal pulses, bruits over the iliac arteries, and evidence of limb ischemia.  Diagnostic evaluation may include ankle-brachial index (ABI) measurement, duplex ultrasonography of the iliac arteries, CT angiography, or magnetic resonance angiography (MRA) to confirm the diagnosis of iliac artery stenosis and assess the degree of narrowing.  Differential diagnoses considered include spinal stenosis, osteoarthritis, and deep vein thrombosis.  Treatment plan may involve lifestyle modifications such as smoking cessation, exercise therapy, and dietary changes.  Pharmacological management may include antiplatelet agents, statins, and medications to control blood pressure and diabetes.  Intervention may be warranted for severe stenosis or disabling claudication and may include angioplasty, stenting, or bypass surgery.  Patient education regarding the importance of medication adherence, regular follow-up appointments, and recognizing signs of complications like critical limb ischemia is crucial.  ICD-10 code I70.2 (Atherosclerosis of iliac artery) is documented.