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I70.91

✓ Billable

Generalized atherosclerosis

Diseases of the circulatory system (I00-I99)

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

I70.9
  • • disorders of pyrophosphate metabolism (E83.82-)
I70
  • • arteriosclerotic cardiovascular disease (I25.1-)
  • • arteriosclerotic heart disease (I25.1-)
  • • atheroembolism (I75.-)
  • • cerebral atherosclerosis (I67.2)
  • • coronary atherosclerosis (I25.1-)
  • • mesenteric atherosclerosis (K55.1)
  • • precerebral atherosclerosis (I67.2)
  • • primary pulmonary atherosclerosis (I27.0)

📋 Code Instructions

inherited
I70
  • • code to identify:
  • • exposure to environmental tobacco smoke (Z77.22)
  • • history of tobacco dependence (Z87.891)
  • • occupational exposure to environmental tobacco smoke (Z57.31)
  • • tobacco dependence (F17.-)
  • • tobacco use (Z72.0)

Clinical Description

ICD-10-CM code I70.91 represents generalized atherosclerosis. This code falls under the Diseases of the circulatory system (I00-I99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code I70.91?

ICD-10-CM code I70.91 is "Generalized atherosclerosis". It belongs to the category: Diseases of the circulatory system (I00-I99).

Is I70.91 a billable ICD-10 code?

Yes, I70.91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can I70.91 be coded with other codes?

I70.91 has 9 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in I70.9

Other codes in the same category that may be relevant for differential coding:

I70.90Unspecified atherosclerosisI70.92Chronic total occlusion of artery of the extremities

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Code Information

CodeI70.91
BillableYes
ParentI70.9
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes29 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)