I51.3
ICD-10BillableIntracardiac thrombosis, not elsewhere classified
Official ICD-10-CM descriptor (FY2026)
Intracardiac thrombosis, not elsewhere classified
I51.3 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Apical thrombosis (old)
- Atrial thrombosis (old)
- Auricular thrombosis (old)
- Mural thrombosis (old)
- Ventricular thrombosis (old)
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- intracardiac thrombosis as current complication following acute myocardial infarction (I23.6)
Related codes in I51
- I51.0Cardiac septal defect, acquired
- I51.1Rupture of chordae tendineae, not elsewhere classified
- I51.2Rupture of papillary muscle, not elsewhere classified
- I51.4Myocarditis, unspecified
- I51.5Myocardial degeneration
- I51.7Cardiomegaly
- I51.8Other ill-defined heart diseasescategory
- I51.9Heart disease, unspecified
Where this code sits
- Parent code
- I51
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.