I25.1 – Atherosclerotic heart disease of native coronary artery

ICD-10-CM 2027 diagnosis code · Ischemic heart diseases

Non-billable header

ICD-10-CM code I25.1
Code
I25.1 (claims format: I251)
Description
Atherosclerotic heart disease of native coronary artery
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
9. Diseases of the circulatory system (I00-I99)
Block
I20-I25 Ischemic heart diseases
Parent codes
I25

Billable codes under I25.1

I25.1 is a header code and cannot be used on claims. Choose the most specific code:

Notes for I25.1

Applicable to:
  • Atherosclerotic cardiovascular disease
  • Coronary (artery) atheroma
  • Coronary (artery) atherosclerosis
  • Coronary (artery) disease
  • Coronary (artery) sclerosis
Excludes2 (not included here):
  • atheroembolism (I75.-)
  • atherosclerosis of coronary artery bypass graft(s) and transplanted heart (I25.7-)
Use additional code:
  • code, if applicable, to identify:
  • coronary atherosclerosis due to calcified coronary lesion (I25.84)
  • coronary atherosclerosis due to lipid rich plaque (I25.83)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I25 – Chronic ischemic heart disease

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)

Block I20-I25

Code also:
  • the presence of hypertension (I10-I1A)

Related codes in I25

Frequently asked questions

What is ICD-10 code I25.1?

I25.1 is the ICD-10-CM code for atherosclerotic heart disease of native coronary artery, in the block I20-I25 (Ischemic heart diseases).

Is I25.1 a billable code?

No. I25.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does I25.1 belong to?

It belongs to category I25 – Chronic ischemic heart disease.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.