I51 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Complications and ill-defined descriptions of heart disease.
Type 2 excludes
Heart disease specified as rheumatic (I00-I09)
Codes
I51.0
Cardiac septal defect, acquired
I51.1
Rupture of chordae tendineae, not elsewhere classified
I51.2
Rupture of papillary muscle, not elsewhere classified
I51.3
Intracardiac thrombosis, not elsewhere classified
I51.4
Myocarditis, unspecified
I51.5
Myocardial degeneration
I51.7
Cardiomegaly
I51.8
Other ill-defined heart diseases
I51.9
Heart disease, unspecified
Versions
2026
Code changed
Type 1 excludes
any condition in I51.4-I51.9 due to hypertension (I11.-)any condition in I51.4-I51.9 due to hypertension and chronic kidney disease (I13.-)heart disease specified as rheumatic (I00-I09)
Type 2 excludes
- heart disease specified as rheumatic (I00-I09)
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code