I49 – Other cardiac arrhythmias
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I49
- Code
I49(claims format:I49)- Description
- Other cardiac arrhythmias
- 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
- I30-I5A Other forms of heart disease
Billable codes under I49
I49 is a header code and cannot be used on claims. Choose the most specific code:
- I49.0 – Ventricular fibrillation and flutterHeader (more codes below)
- I49.1 – Atrial premature depolarizationBillable
- I49.2 – Junctional premature depolarizationBillable
- I49.3 – Ventricular premature depolarizationBillable
- I49.4 – Other and unspecified premature depolarizationHeader (more codes below)
- I49.5 – Sick sinus syndromeBillable
- I49.8 – Other specified cardiac arrhythmiasHeader (more codes below)
- I49.9 – Cardiac arrhythmia, unspecifiedBillable
Notes for I49
Excludes2 (not included here):
Frequently asked questions
What is ICD-10 code I49?
I49 is the ICD-10-CM code for other cardiac arrhythmias, in the block I30-I5A (Other forms of heart disease).
Is I49 a billable code?
No. I49 is a header code with more specific child codes; report one of the billable codes listed above.
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.