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I70.1
ICD-10-CM
Renal Artery Stenosis

Find comprehensive information on Renal Artery Stenosis diagnosis, including clinical documentation requirements, ICD-10 codes (I70.1), medical coding guidelines, and healthcare resources. Learn about renal artery ultrasound, angiography, and other diagnostic procedures for accurate identification and treatment of renal artery narrowing. This resource covers renovascular hypertension management, symptoms, and the role of clinical findings in establishing a definitive diagnosis. Explore relevant information for healthcare professionals, including coding best practices for Renal Artery Stenosis and associated conditions.

Also known as

RAS
Renal Artery Narrowing
renovascular hypertension
+1 more

Diagnosis Snapshot

Key Facts
  • Definition : Narrowing of the arteries that carry blood to the kidneys.
  • Clinical Signs : High blood pressure, worsening kidney function, abnormal kidney bruit.
  • Common Settings : Hypertension clinic, nephrology clinic, interventional radiology.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC I70.1 Coding
I79.0

Renal artery stenosis

Narrowing of arteries supplying blood to the kidneys.

I70.1

Atherosclerosis of renal artery

Hardening and narrowing of renal arteries due to plaque buildup.

I15

Secondary hypertension

High blood pressure caused by an underlying condition, like renal artery stenosis.

N28.1

Renal failure NOS

Kidney failure, unspecified, which can be a consequence of severe renal artery stenosis.

Code-Specific Guidance

Decision Tree for

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

Is the renal artery stenosis unilateral or bilateral?

  • Unilateral

    Is it due to atherosclerosis?

  • Bilateral

    Is it due to atherosclerosis?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Renal artery narrowing reducing blood flow to kidney.
High blood pressure due to kidney disease.
Kidney failure due to reduced blood flow.

Documentation Best Practices

Documentation Checklist
  • Document laterality (unilateral, bilateral)
  • RAS cause (atherosclerosis, fibromuscular dysplasia)
  • Hypertension details (onset, severity, refractoriness)
  • Impact on renal function (eGFR, creatinine)
  • Diagnostic imaging findings (e.g., Doppler ultrasound, MRA)

Coding and Audit Risks

Common Risks
  • Laterality Coding

    Missing or incorrect laterality (right, left, bilateral) for renal artery stenosis impacts reimbursement and data accuracy. ICD-10-CM coding requires specificity.

  • Underlying Cause

    Failing to code the underlying etiology of renal artery stenosis (e.g., atherosclerosis, fibromuscular dysplasia) can lead to inaccurate reporting and missed CC/MCC capture.

  • Atherosclerotic vs. Non-atherosclerotic

    Properly distinguishing and coding atherosclerotic renal artery stenosis from non-atherosclerotic types is crucial for accurate quality reporting and risk adjustment.

Mitigation Tips

Best Practices
  • Document laterality, stenosis %, and cause (ICD-10-CM I79.0)
  • Capture accurate pre- and post-intervention BP for correct coding (CPT)
  • Query physician for clarity if documentation lacks details for CDI
  • Ensure medical necessity for diagnostic imaging meets payer guidelines
  • Code RAS etiology (atherosclerosis, fibromuscular dysplasia) for optimal reimbursement

Clinical Decision Support

Checklist
  • Verify uncontrolled HTN with documented BP values.
  • Check for unexplained creatinine elevation after ACEi/ARB initiation.
  • Auscultate for abdominal bruit lateral to midline.
  • Review renal imaging for kidney size discrepancy >=1.5cm.
  • Assess for flash pulmonary edema or refractory heart failure.

Reimbursement and Quality Metrics

Impact Summary
  • Renal Artery Stenosis reimbursement: ICD-10-CM I70.1, CPT 75625-75794 impact coding accuracy.
  • RAS diagnosis quality metrics: HTN control, renal function monitoring affect hospital reporting.
  • Accurate RAS coding improves case mix index CMI for appropriate hospital reimbursement.
  • Timely diagnosis documentation impacts quality scores for renal stenosis management.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes for . Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code I70.1 for renal artery stenosis
  • Document laterality: right, left, bilateral
  • Query physician for cause if unclear
  • Check for hypertension diagnosis
  • Consider I15.0 if renovascular HTN

Documentation Templates

Patient presents with complaints suggestive of renal artery stenosis including resistant hypertension, unexplained decline in renal function, or episodic flash pulmonary edema.  Assessment reveals elevated blood pressure, potentially with asymmetric readings, and auscultation may reveal an abdominal bruit.  Laboratory findings may indicate elevated creatinine and BUN, suggestive of renal insufficiency.  Diagnostic workup for renal artery stenosis may include renal duplex ultrasonography, computed tomography angiography (CTA), magnetic resonance angiography (MRA), or invasive angiography.  Differential diagnosis includes essential hypertension, chronic kidney disease, atherosclerotic renal artery disease, fibromuscular dysplasia, and renovascular hypertension.  Treatment options for renal artery stenosis are determined based on disease severity and patient-specific factors.  Medical management may involve antihypertensive medications, including ACE inhibitors, ARBs, or beta-blockers, and optimizing risk factors such as hyperlipidemia and diabetes.  Interventional procedures such as percutaneous transluminal renal angioplasty (PTRA) with or without stenting may be considered for appropriate candidates.  Surgical revascularization is reserved for complex cases or failed endovascular interventions.  Patient education regarding medication adherence, lifestyle modifications, and follow-up care is essential for optimal management of renal artery stenosis.