I25.42 – Coronary artery dissection

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

Billable code

ICD-10-CM code I25.42
Code
I25.42 (claims format: I2542)
Description
Coronary artery dissection
Billable
Yes – valid for HIPAA-covered transactions
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 › I25.4

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)

Index terms for I25.42

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I25.4

Frequently asked questions

What is ICD-10 code I25.42?

I25.42 is the ICD-10-CM code for coronary artery dissection, in the block I20-I25 (Ischemic heart diseases).

Is I25.42 a billable code?

Yes. I25.42 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I25.42 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.