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I70.603

✓ Billable

Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs

Diseases of the circulatory system (I00-I99)

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

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
I70.6
  • • code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
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 I70.603 represents unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs. 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 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code I70.603?

ICD-10-CM code I70.603 is "Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs". It belongs to the category: Diseases of the circulatory system (I00-I99).

Is I70.603 a billable ICD-10 code?

Yes, I70.603 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can I70.603 be coded with other codes?

I70.603 has 8 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in I70.60

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

I70.601Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, right legI70.602Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left legI70.608Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremityI70.609Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity

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Code Information

CodeI70.603
BillableYes
ParentI70.60
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes28 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)