ICD-10-CM FY2027 diagnosis code

I51.89: Other ill-defined heart diseases

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

I51.89 is a billable ICD-10-CM diagnosis code for other ill-defined heart diseases. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

Other codes in I51.8 Other ill-defined heart diseases

I51.89 questions

Is I51.89 a billable code?

Yes. I51.89 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does I51.89 mean?

I51.89 is the ICD-10-CM code for Other ill-defined heart diseases. It is in chapter 9, Diseases of the circulatory system (I00-I99).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.