I50.31 Acute diastolic (congestive) heart failure

Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

• combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)

Excludes2

Not part of this code, but both can be coded when both are documented.

• cardiac arrest (I46.-)
• neonatal cardiac failure (P29.0)

Code first

Code the underlying condition first, then this code.

• 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

A second code may be needed. Sequencing depends on the encounter.

• end stage heart failure, if applicable (I50.84)