2026 ICD-10-CM Diagnosis Code I70.1Atherosclerosis of renal artery

ICD-10-CM Codes›I00–I99›I70-I79›I70

ICD-10-CM I70.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I70.1 is a billable ICD-10-CM diagnosis code for atherosclerosis of renal artery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 698 through 700. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Peripheral and visceral vascular disease.

Code Identity

ICD-10-CM Code
I70.1
Billable Status
Yes — Valid for Submission
Code Describes
Atherosclerosis of renal artery
Short Description
Atherosclerosis of renal artery
Same as the full description in the CMS dataset.
Parent Code
I70
Atherosclerosis

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI70-I79Diseases of arteries, arterioles and capillaries
CategoryI70Atherosclerosis
This CodeI70.1Atherosclerosis of renal artery

Code EditsBilling

Medicare Code Editor checks that affect claim validity for I70.1.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired renal artery stenosis
  • Arteriosclerosis of renal artery
  • Atherosclerosis of abdominal visceral artery
  • Atherosclerosis of bilateral renal arteries
  • Atherosclerosis of left renal artery
  • Atherosclerosis of renal artery
  • Atherosclerosis of right renal artery
  • Atherosclerotic renal artery stenosis
  • Bilateral renal artery stenosis
  • Nephrosclerosis
  • Renal artery stenosis
  • Renal artery stenosis due to fibromuscular hyperplasia
  • Renal artery stenosis of unknown cause
  • Stenosis of left renal artery
  • Stenosis of right renal artery
  • Transplant renal artery stenosis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Goldblatt's kidney

Type 2 Excludes

  • atherosclerosis of renal arterioles I12

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Arteriosclerosis, arteriosclerotic(diffuse) (obliterans) (of) (senile) (with calcification)
      • renal (arterioles)
        • artery
    • Goldblatt's hypertension or kidney
    • Hypertension, hypertensive(accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
      • Goldblatt's
    • Stenosis, stenotic(cicatricial)
      • artery NEC
        • renal
    • Stenosis, stenotic(cicatricial)
      • renal artery
    • Stricture
      • artery
        • renal
    • Stricture
      • renal artery

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR026
Peripheral and visceral vascular disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Nephrosclerosis

    hardening of the kidney due to infiltration by fibrous connective tissue (fibrosis), usually caused by renovascular diseases or chronic hypertension. nephrosclerosis leads to renal ischemia.

  • Renal Artery Stenosis

    narrowing of a main artery in the kidney.

Patient EducationClinical

Atherosclerosis

Atherosclerosis is a condition in which plaque builds up inside your arteries. Plaque is a sticky substance made up of cholesterol, fat, blood cells, calcium, and other substances found in the blood. Over time, plaque hardens and causes your arteries to narrow. That limits the flow of oxygen-rich blood to your body.

The full article covers:

  • What is atherosclerosis?
  • What causes atherosclerosis?
  • Who is more likely to develop atherosclerosis?
  • What are the symptoms of atherosclerosis?
  • What other problems can atherosclerosis cause?
  • How is atherosclerosis diagnosed?
  • What are the treatments for atherosclerosis?
  • Can atherosclerosis be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I70.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
440.1 Renal artery atheroscler
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I70.1Overview

Is I70.1 (Atherosclerosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report atherosclerosis of renal artery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I70.1 group to?

When atherosclerosis of renal artery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 698, 699, 700, with relative weights from 0.6899 to 1.6544 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can I70.1 be reported for?

The Medicare Code Editor checks atherosclerosis of renal artery against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of I70.1?

Under the General Equivalence Mappings, atherosclerosis of renal artery converts to ICD-9-CM 440.1 (renal artery atheroscler). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.