ICD-10 Code for Endocarditis

The default ICD-10-CM 2027 code for endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) is I38 – Endocarditis, valve unspecified. More specific codes depend on the details documented, as listed in the official index (37 codes, 36 billable).

Main code: I38 – Endocarditis, valve unspecified
Billable: Yes

Index entries for Endocarditis

with rheumatic fever (conditions in I00)
- active – see Endocarditis, acute, rheumatic
- inactive or quiescent (with chorea) – I09.1
acute or subacute – I33.9
- infective – I33.0
- rheumatic (aortic) (mitral) (pulmonary) (tricuspid) – I01.1
  - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
aortic (heart) (nonrheumatic) (valve) – I35.8
- with
  - mitral disease – I08.0
    - with tricuspid (valve) – I08.3
    - active or acute – I01.1
      - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
  - rheumatic fever (conditions in I00)
    - active – see Endocarditis, acute, rheumatic
    - inactive or quiescent (with chorea) – I06.9
  - tricuspid (valve) – I08.2
    - with mitral (valve) – I08.3
- acute or subacute – I33.9
- arteriosclerotic – I35.8
- rheumatic – I06.9
  - with mitral disease – I08.0
    - with tricuspid (valve) – I08.3
    - active or acute – I01.1
      - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
  - active or acute – I01.1
    - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
  - specified NEC – I06.8
- specified cause NEC – I35.8
- syphilitic – A52.03
arteriosclerotic – I38
atypical verrucous (Libman-Sacks) – M32.11
bacterial (acute) (any valve) (subacute) – I33.0
candidal – B37.6
congenital – Q24.8
constrictive – I33.0
Coxiella burnetii – A78 – I39 [manifestation]
Coxsackie – B33.21
due to
- prosthetic cardiac valve – T82.6 (header)
- Q fever – A78 – I39 [manifestation]
- Serratia marcescens – I33.0
- typhoid (fever) – A01.02
gonococcal – A54.83
infectious or infective (acute) (any valve) (subacute) – I33.0
lenta (acute) (any valve) (subacute) – I33.0
Libman-Sacks – M32.11
listerial – A32.82
Löffler's – I42.3
malignant (acute) (any valve) (subacute) – I33.0
meningococcal – A39.51
mitral (chronic) (double) (fibroid) (heart) (inactive) (valve) (with chorea) – I05.9
- with
  - aortic (valve) – I08.0
    - with tricuspid (valve) – I08.3
    - active or acute – I01.1
      - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
  - rheumatic fever (conditions in I00)
    - active – see Endocarditis, acute, rheumatic
    - inactive or quiescent (with chorea) – I05.9
  - tricuspid (valve) – I08.1
    - with aortic (valve) – I08.3
- active or acute – I01.1
  - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
  - bacterial – I33.0
- arteriosclerotic – I34.89
- nonrheumatic – I34.89
  - acute or subacute – I33.9
- specified NEC – I05.8
monilial – B37.6
multiple valves – I08.9
- specified disorders – I08.8
mycotic (acute) (any valve) (subacute) – I33.0
pneumococcal (acute) (any valve) (subacute) – I33.0
pulmonary (chronic) (heart) (valve) – I37.8
- with rheumatic fever (conditions in I00)
  - active – see Endocarditis, acute, rheumatic
  - inactive or quiescent (with chorea) – I09.89
    - with aortic, mitral or tricuspid disease – I08.8
- acute or subacute – I33.9
  - rheumatic – I01.1
    - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
- arteriosclerotic – I37.8
- congenital – Q22.2
- rheumatic (chronic) (inactive) (with chorea) – I09.89
  - active or acute – I01.1
    - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
- syphilitic – A52.03
purulent (acute) (any valve) (subacute) – I33.0
Q fever – A78 – I39 [manifestation]
rheumatic (chronic) (inactive) (with chorea) – I09.1
- active or acute (aortic) (mitral) (pulmonary) (tricuspid) – I01.1
  - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
rheumatoid – see Rheumatoid, carditis
septic (acute) (any valve) (subacute) – I33.0
streptococcal (acute) (any valve) (subacute) – I33.0
subacute – see Endocarditis, acute
suppurative (acute) (any valve) (subacute) – I33.0
syphilitic – A52.03
toxic – I33.9
tricuspid (chronic) (heart) (inactive) (rheumatic) (valve) (with chorea) – I07.9
- with
  - aortic (valve) – I08.2
    - mitral (valve) – I08.3
  - mitral (valve) – I08.1
    - aortic (valve) – I08.3
  - rheumatic fever (conditions in I00)
    - active – see Endocarditis, acute, rheumatic
    - inactive or quiescent (with chorea) – I07.8
- active or acute – I01.1
  - with chorea (acute) (rheumatic) (Sydenham's) – I02.0
- arteriosclerotic – I36.8
- nonrheumatic – I36.8
  - acute or subacute – I33.9
- specified cause, except rheumatic – I36.8
tuberculous – see Tuberculosis, endocarditis
typhoid – A01.02
ulcerative (acute) (any valve) (subacute) – I33.0
vegetative (acute) (any valve) (subacute) – I33.0
verrucous (atypical) (nonbacterial) (nonrheumatic) – M32.11

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.