I51.89 – Other ill-defined heart diseases
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I51.89
- Code
I51.89(claims format:I5189)- Description
- Other ill-defined heart diseases
- 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
- I30-I5A Other forms of heart disease
- Parent codes
- I51 › I51.8
Notes for I51.89
Applicable to:
- Carditis (acute)(chronic)
- Pancarditis (acute)(chronic)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
I51 – Complications and ill-defined descriptions of heart disease
Index terms for I51.89
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Carditis
- Pancarditis
- Dysfunction, heart
- Disorder, cardiac, functional
- Dysfunction, papillary muscle
- Hemorrhage, hemorrhagic, heart
- Asynergia, asynergy, ventricular
- Hyperkinesia, hyperkinetic, heart
- Disease, diseased, heart, functional
- Displacement, displaced, heart, acquired
- Incompetency, incompetent, incompetence, chronotropic, with, left ventricular dysfunction
Related codes in I51.8
- I51.81 – Takotsubo syndromeBillable
Frequently asked questions
What is ICD-10 code I51.89?
I51.89 is the ICD-10-CM code for other ill-defined heart diseases, in the block I30-I5A (Other forms of heart disease).
Is I51.89 a billable code?
Yes. I51.89 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does I51.89 belong to?
It belongs to category I51 – Complications and ill-defined descriptions of 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.