I25

Non-billable

Chronic ischemic heart disease

I25 is the ICD-10-CM code for Chronic ischemic heart disease. It is a non-billable category code — use a more specific child code such as I25.1 for billing.

Status
Header (non-billable)
Chapter
I00-I99
Subcodes
9
Edition
FY2026

I00-I99 Diseases of the circulatory system

Excludes2 — not included here

  • non-ischemic myocardial injury (I5A)

Use additional code

  • code to identify:
  • chronic total occlusion of coronary artery (I25.82)
  • 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)

Frequently asked questions

What is ICD-10 code I25?
I25 is the ICD-10-CM code for "Chronic ischemic heart disease". It falls under I00-I99 Diseases of the circulatory system.
Is I25 a billable code?
No — I25 is a non-billable header code. Use a more specific child code (such as I25.1) for billing.
What are the subcodes of I25?
I25 has 9 more specific child codes, including I25.1, I25.2, I25.3.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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