I51.3
Intracardiac thrombosis, not elsewhere classified
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 12 never code together
I51.3code
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 5
I51.3code
Inclusion terms
- Apical thrombosis (old)
- Atrial thrombosis (old)
- Auricular thrombosis (old)
- Mural thrombosis (old)
- Ventricular thrombosis (old)
Index entries leading here 4
- Ischemia, ischemic I99.8
- Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) I82.90
- atrium, auricular — see also Infarct, myocardium
- cardiac — see also Infarct, myocardium
- endocardial — see also Infarct, myocardium
- not resulting in infarction I51.3
- heart (chamber) — see also Infarct, myocardium
- intracardiac NEC (apical) (atrial) (auricular) (ventricular) (old) I51.3
- intramural — see also Infarct, myocardium
- mural — see also Infarct, myocardium
- ventricle — see also Infarct, myocardium
- old I51.3
- Embolism (multiple) (paradoxical) I74.9
- Clot (blood) — see also Embolism
- heart — see also Infarct, myocardium
- not resulting in infarction I51.3
- heart — see also Infarct, myocardium
Alongside this code 8 same parent — I51
I51.0 Cardiac septal defect, acquired I51.1 Rupture of chordae tendineae, not elsewhere classified I51.2 Rupture of papillary muscle, not elsewhere classified I51.4 Myocarditis, unspecified I51.5 Myocardial degeneration I51.7 Cardiomegaly I51.8 Other ill-defined heart diseases category I51.9 Heart disease, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.