I43 – Cardiomyopathy in diseases classified elsewhere
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I43
- Code
I43(claims format:I43)- Description
- Cardiomyopathy in diseases classified elsewhere
- 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
Notes for I43
Excludes1 (not coded here):
Index terms for I43
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Amyloid heart
- Amyloidosis, heart
- Thyrotoxicosis, heart
- Glycogenosis, cardiac
- Cardiomegaly, glycogen
- Cardiomyopathy, amyloid
- Cardiomyopathy, metabolic
- Myocardiopathy, thyrotoxic
- Cardiomyopathy, thyrotoxic
- Cardiomyopathy, nutritional
- Thyrotoxicosis, heart, failure
- Cardiomyopathy, glycogen storage
- Myocardiopathy, glycogen storage
- Disease, diseased, thyroid, heart
- Cardiomegalia glycogenica diffusa
- Disease, diseased, heart, amyloid
- Thyrotoxic, heart disease or failure
- Disease, diseased, heart, thyrotoxic
- Cardiomyopathy, metabolic, thyrotoxic
- Disease, diseased, heart, hyperthyroid
- Myocardiopathy, thyrotoxic, with storm
- Myocardiopathy, in, myotonia atrophica
- Myocardiopathy, in, Friedreich's ataxia
- Myocardiopathy, in, cardiac glycogenosis
- Thyrotoxicosis, heart, with thyroid storm
Frequently asked questions
What is ICD-10 code I43?
I43 is the ICD-10-CM code for cardiomyopathy in diseases classified elsewhere, in the block I30-I5A (Other forms of heart disease).
Is I43 a billable code?
Yes. I43 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
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.