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  3. Ch. I00-I99
  4. Sec. I30-I5A
  5. Category I51
Category I51

Complications and ill-defined descriptions of heart disease

Clinical Classification Guidelines

Specific Diagnosis Codes

Cardiac septal defect, acquired
I51.0
Rupture of chordae tendineae, not elsewhere classified
I51.1
Rupture of papillary muscle, not elsewhere classified
I51.2
Intracardiac thrombosis, not elsewhere classified
I51.3
Myocarditis, unspecified
I51.4
Myocardial degeneration
I51.5
Cardiomegaly
I51.7
Other ill-defined heart diseases
I51.8
Takotsubo syndrome
I51.81
Other ill-defined heart diseases
I51.89
Heart disease, unspecified
I51.9
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Data updated for October 2025 release.

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