I51.89 Other ill-defined heart diseases

Billable ICD-10-CM code, FY2026.

Applicable to

• Carditis (acute)(chronic)
• Pancarditis (acute)(chronic)

Applies from I51 Complications and ill-defined descriptions of heart disease

Excludes2 (not included here)

• heart disease specified as rheumatic (I00-I09)

MS-DRG index

Defines the logic of DRG(s) 302-303 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 429.81 Other disorders of papillary muscle (approximate)
• 429.82 Hyperkinetic heart disease (approximate)
• 429.89 Other ill-defined heart diseases (approximate)

Diagnosis Index entries for I51.89

• Asynergia, asynergy › ventricular
• Carditis (acute) (bacterial) (chronic) (subacute)
• Disease, diseased › heart (organic) › functional
• Disorder (of) › cardiac, functional
• Displacement, displaced › heart (congenital) › acquired
• Dysfunction › heart
• Dysfunction › papillary muscle
• Hemorrhage, hemorrhagic (concealed) › heart
• Hyperkinesia, hyperkinetic (disease) (reaction) (syndrome) (childhood) (adolescence) › heart
• Incompetency, incompetent, incompetence › chronotropic › with › left ventricular dysfunction
• Pancarditis (acute) (chronic)

Nearby codes

• I51.4 Myocarditis, unspecified
• I51.5 Myocardial degeneration
• I51.7 Cardiomegaly
• I51.8 Other ill-defined heart diseases
• I51.81 Takotsubo syndrome
• I51.89 Other ill-defined heart diseases (this code)
• I51.9 Heart disease, unspecified