ICD-10 Code for Endocarditis
Also indexed as (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)
The ICD-10-CM code for endocarditis is I38 — Endocarditis, valve unspecified. This is the code the Alphabetic Index gives for endocarditis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
BillableUnspecified
I38 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which endocarditis code should you use?
The Alphabetic Index lists 37 codes under Endocarditis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| acute or subacute | I33.9 | Acute and subacute endocarditis, unspecified | |
| aortic | I35.8 | Other nonrheumatic aortic valve disorders | |
| arteriosclerotic | I38 | Endocarditis, valve unspecified | |
| atypical verrucous | M32.11 | Endocarditis in systemic lupus erythematosus | |
| bacterial | I33.0 | Acute and subacute infective endocarditis | |
| candidal | B37.6 | Candidal endocarditis | |
| congenital | Q24.8 | Other specified congenital malformations of heart | |
| constrictive | I33.0 | Acute and subacute infective endocarditis | |
| Coxiella burnetii | A78 | Q fever | |
| Coxsackie | B33.21 | Viral endocarditis | |
| gonococcal | A54.83 | Gonococcal heart infection | |
| infectious or infective | I33.0 | Acute and subacute infective endocarditis | |
| lenta | I33.0 | Acute and subacute infective endocarditis | |
| Libman-Sacks | M32.11 | Endocarditis in systemic lupus erythematosus | |
| listerial | A32.82 | Listerial endocarditis | |
| Löffler's | I42.3 | Endomyocardial (eosinophilic) disease | |
| malignant | I33.0 | Acute and subacute infective endocarditis | |
| meningococcal | A39.51 | Meningococcal endocarditis | |
| mitral | I05.9 | Rheumatic mitral valve disease, unspecified | |
| monilial | B37.6 | Candidal endocarditis | |
| multiple valves | I08.9 | Rheumatic multiple valve disease, unspecified | |
| mycotic | I33.0 | Acute and subacute infective endocarditis | |
| pneumococcal | I33.0 | Acute and subacute infective endocarditis | |
| pulmonary | I37.8 | Other nonrheumatic pulmonary valve disorders | |
| purulent | I33.0 | Acute and subacute infective endocarditis | |
| Q fever | A78 | Q fever | |
| rheumatic | I09.1 | Rheumatic diseases of endocardium, valve unspecified | |
| septic | I33.0 | Acute and subacute infective endocarditis | |
| streptococcal | I33.0 | Acute and subacute infective endocarditis | |
| suppurative | I33.0 | Acute and subacute infective endocarditis | |
| syphilitic | A52.03 | Syphilitic endocarditis | |
| toxic | I33.9 | Acute and subacute endocarditis, unspecified | |
| tricuspid | I07.9 | Rheumatic tricuspid valve disease, unspecified | |
| typhoid | A01.02 | Typhoid fever with heart involvement | |
| ulcerative | I33.0 | Acute and subacute infective endocarditis | |
| vegetative | I33.0 | Acute and subacute infective endocarditis | |
| verrucous | M32.11 | Endocarditis in systemic lupus erythematosus |
Endocarditis with rheumatic fever
| inactive or quiescent | I09.1 | Rheumatic diseases of endocardium, valve unspecified |
Endocarditis acute or subacute
Endocarditis aortic
| acute or subacute | I33.9 | Acute and subacute endocarditis, unspecified | |
| arteriosclerotic | I35.8 | Other nonrheumatic aortic valve disorders | |
| rheumatic | I06.9 | Rheumatic aortic valve disease, unspecified | |
| specified cause NEC | I35.8 | Other nonrheumatic aortic valve disorders | |
| syphilitic | A52.03 | Syphilitic endocarditis | |
| with › mitral disease | I08.0 | Rheumatic disorders of both mitral and aortic valves | |
| with › tricuspiddisease | I08.2 | Rheumatic disorders of both aortic and tricuspid valves | |
| rheumatic › with mitral disease | I08.0 | Rheumatic disorders of both mitral and aortic valves | |
| rheumatic › active or acute | I01.1 | Acute rheumatic endocarditis | |
| rheumatic › specified NEC | I06.8 | Other rheumatic aortic valve diseases | |
| with › mitral disease › with tricuspiddisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| with › mitral disease › active or acute | I01.1 | Acute rheumatic endocarditis | |
| with › rheumatic fever › inactive or quiescent | I06.9 | Rheumatic aortic valve disease, unspecified | |
| with › tricuspiddisease › with mitraldisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| rheumatic › with mitral disease › with tricuspiddisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| rheumatic › with mitral disease › active or acute | I01.1 | Acute rheumatic endocarditis | |
| rheumatic › active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement | |
| with › mitral disease › active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement | |
| rheumatic › with mitral disease › active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement |
Endocarditis due to
Endocarditis mitral
| active or acute | I01.1 | Acute rheumatic endocarditis | |
| arteriosclerotic | I34.89 | Other nonrheumatic mitral valve disorders | |
| nonrheumatic | I34.89 | Other nonrheumatic mitral valve disorders | |
| specified NEC | I05.8 | Other rheumatic mitral valve diseases | |
| with › aorticdisease | I08.0 | Rheumatic disorders of both mitral and aortic valves | |
| with › tricuspiddisease | I08.1 | Rheumatic disorders of both mitral and tricuspid valves | |
| active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement | |
| active or acute › bacterial | I33.0 | Acute and subacute infective endocarditis | |
| nonrheumatic › acute or subacute | I33.9 | Acute and subacute endocarditis, unspecified | |
| with › aorticdisease › with tricuspiddisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| with › aorticdisease › active or acute | I01.1 | Acute rheumatic endocarditis | |
| with › rheumatic fever › inactive or quiescent | I05.9 | Rheumatic mitral valve disease, unspecified | |
| with › tricuspiddisease › with aorticdisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| with › aorticdisease › active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement |
Endocarditis multiple valves
| specified disorders | I08.8 | Other rheumatic multiple valve diseases |
Endocarditis pulmonary
| acute or subacute | I33.9 | Acute and subacute endocarditis, unspecified | |
| arteriosclerotic | I37.8 | Other nonrheumatic pulmonary valve disorders | |
| congenital | Q22.2 | Congenital pulmonary valve insufficiency | |
| rheumatic | I09.89 | Other specified rheumatic heart diseases | |
| syphilitic | A52.03 | Syphilitic endocarditis | |
| with rheumatic fever › inactive or quiescent | I09.89 | Other specified rheumatic heart diseases | |
| acute or subacute › rheumatic | I01.1 | Acute rheumatic endocarditis | |
| rheumatic › active or acute | I01.1 | Acute rheumatic endocarditis | |
| with rheumatic fever › inactive or quiescent › with aortic, mitral or tricuspid disease | I08.8 | Other rheumatic multiple valve diseases | |
| acute or subacute › rheumatic › with chorea | I02.0 | Rheumatic chorea with heart involvement | |
| rheumatic › active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement |
Endocarditis rheumatic
Endocarditis tricuspid
| active or acute | I01.1 | Acute rheumatic endocarditis | |
| arteriosclerotic | I36.8 | Other nonrheumatic tricuspid valve disorders | |
| nonrheumatic | I36.8 | Other nonrheumatic tricuspid valve disorders | |
| specified cause, except rheumatic | I36.8 | Other nonrheumatic tricuspid valve disorders | |
| with › aorticdisease | I08.2 | Rheumatic disorders of both aortic and tricuspid valves | |
| with › mitraldisease | I08.1 | Rheumatic disorders of both mitral and tricuspid valves | |
| active or acute › with chorea | I02.0 | Rheumatic chorea with heart involvement | |
| nonrheumatic › acute or subacute | I33.9 | Acute and subacute endocarditis, unspecified | |
| with › aorticdisease › mitraldisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| with › mitraldisease › aorticdisease | I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valves | |
| with › rheumatic fever › inactive or quiescent | I07.8 | Other rheumatic tricuspid valve diseases |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources