I51.3 – Intracardiac thrombosis, not elsewhere classified
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I51.3
- Code
I51.3(claims format:I513)- Description
- Intracardiac thrombosis, not elsewhere classified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I30-I5A Other forms of heart disease
- Parent codes
- I51
Notes for I51.3
Applicable to:
- Apical thrombosis (old)
- Atrial thrombosis (old)
- Auricular thrombosis (old)
- Mural thrombosis (old)
- Ventricular thrombosis (old)
Excludes1 (not coded here):
- intracardiac thrombosis as current complication following acute myocardial infarction (I23.6)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
I51 – Complications and ill-defined descriptions of heart disease
Index terms for I51.3
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Thrombosis, thrombotic, mural, old
- Thrombosis, thrombotic, heart, old
- Thrombosis, thrombotic, cardiac, old
- Thrombosis, thrombotic, ventricle, old
- Thrombosis, thrombotic, intramural, old
- Clot, heart, not resulting in infarction
- Thrombosis, thrombotic, intracardiac NEC
- Embolism, heart, not resulting in infarction
- Embolism, cardiac, not resulting in infarction
- Thrombosis, thrombotic, atrium, auricular, old
- Thrombosis, thrombotic, heart, not resulting in infarction
- Thrombosis, thrombotic, mural, not resulting in infarction
- Thrombosis, thrombotic, cardiac, not resulting in infarction
- Thrombosis, thrombotic, intramural, not resulting in infarction
- Thrombosis, thrombotic, endocardial, not resulting in infarction
- Thrombosis, thrombotic, atrium, auricular, not resulting in infarction
- Ischemia, ischemic, myocardium, myocardial, acute, without myocardial infarction
Related codes in I51
- I51.0 – Cardiac septal defect, acquiredBillable
- I51.1 – Rupture of chordae tendineae, not elsewhere classifiedBillable
- I51.2 – Rupture of papillary muscle, not elsewhere classifiedBillable
- I51.4 – Myocarditis, unspecifiedBillable
- I51.5 – Myocardial degenerationBillable
- I51.7 – CardiomegalyBillable
- I51.8 – Other ill-defined heart diseasesHeader
- I51.9 – Heart disease, unspecifiedBillable
Frequently asked questions
What is ICD-10 code I51.3?
I51.3 is the ICD-10-CM code for intracardiac thrombosis, not elsewhere classified, in the block I30-I5A (Other forms of heart disease).
Is I51.3 a billable code?
Yes. I51.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does I51.3 belong to?
It belongs to category I51 – Complications and ill-defined descriptions of heart disease.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.