I50.3
Diastolic (congestive) heart failure
I50.3 is a non-billable ICD-10-CM code header for diastolic (congestive) heart failure. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I50.30 Unspecified diastolic (congestive) heart failure, I50.31 Acute diastolic (congestive) heart failure, I50.32 Chronic diastolic (congestive) heart failure and I50.33 Acute on chronic diastolic (congestive) heart failure. Its coding notes include a Code first instruction, a Code also instruction, 1 Excludes1 entry and 12 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Hypertension with heart failure or certain other heart conditions is assigned to category I11, with an additional code for the heart condition, unless the provider documents they are unrelated.
Code first
If the underlying condition listed here is present and known, sequence it 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)
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- end stage heart failure, if applicable (I50.84)
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Inclusion terms
Conditions classified to this code.
- Diastolic left ventricular heart failure
- Heart failure with normal ejection fraction
- Heart failure with preserved ejection fraction [HFpEF]