I50.3 – Diastolic (congestive) heart failure
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I50.3
- Code
I50.3(claims format:I503)- Description
- Diastolic (congestive) heart failure
- 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
- Parent codes
- I50
Billable codes under I50.3
I50.3 is a header code and cannot be used on claims. Choose the most specific code:
Notes for I50.3
Applicable to:
- Diastolic left ventricular heart failure
- Heart failure with normal ejection fraction
- Heart failure with preserved ejection fraction [HFpEF]
Excludes1 (not coded here):
- combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)
Code also:
- end stage heart failure, if applicable (I50.84)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
I50 – Heart failure
Code first:
- heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- heart failure due to hypertension (I11.0)
- heart failure due to hypertension with chronic kidney disease (I13.-)
- heart failure following surgery (I97.13-)
- obstetric surgery and procedures (O75.4)
- rheumatic heart failure (I09.81)
Related codes in I50
Frequently asked questions
What is ICD-10 code I50.3?
I50.3 is the ICD-10-CM code for diastolic (congestive) heart failure, in the block I30-I5A (Other forms of heart disease).
Is I50.3 a billable code?
No. I50.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does I50.3 belong to?
It belongs to category I50 – Heart failure.
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.