2023

  1. ICD-10-CM Codes
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  2. I00-I99
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  3. I05-I09
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  4. I09-
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  5. 2023 ICD-10-CM Diagnosis Code I09.1

2023 ICD-10-CM Diagnosis Code I09.1

Rheumatic diseases of endocardium, valve unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • I09.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM I09.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of I09.1 - other international versions of ICD-10 I09.1 may differ.
Applicable To
  • Rheumatic endocarditis (chronic)
  • Rheumatic valvulitis (chronic)
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I09.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • endocarditis, valve unspecified (
    ICD-10-CM Diagnosis Code I38

    Endocarditis, valve unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Includes
    • endocarditis (chronic) NOS
    • valvular incompetence NOS
    • valvular insufficiency NOS
    • valvular regurgitation NOS
    • valvular stenosis NOS
    • valvulitis (chronic) NOS
    Type 1 Excludes
    • congenital insufficiency of cardiac valve NOS (Q24.8)
    • congenital stenosis of cardiac valve NOS (Q24.8)
    • endocardial fibroelastosis (I42.4)
    • endocarditis specified as rheumatic (I09.1)
    I38
    )
The following code(s) above I09.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I09.1:
  • I00-I99
    2023 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
Approximate Synonyms
  • Chronic rheumatic valvulitis
  • Chronic rheumatic valvulitis (heart valve condition)
  • Rheumatic endocarditis
  • Rheumatic endocarditis (infection of heart valve)
  • Rheumatic valvulitis, chronic (heart valve condition)
ICD-10-CM I09.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert I09.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to I09.1:
  • Type 1 Excludes: I08
    , I38
    ICD-10-CM Diagnosis Code I08

    Multiple valve diseases

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • multiple valve diseases specified as rheumatic or unspecified
    Type 1 Excludes
    ICD-10-CM Diagnosis Code I38

    Endocarditis, valve unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Includes
    • endocarditis (chronic) NOS
    • valvular incompetence NOS
    • valvular insufficiency NOS
    • valvular regurgitation NOS
    • valvular stenosis NOS
    • valvulitis (chronic) NOS
    Type 1 Excludes
    • congenital insufficiency of cardiac valve NOS (Q24.8)
    • congenital stenosis of cardiac valve NOS (Q24.8)
    • endocardial fibroelastosis (I42.4)
    • endocarditis specified as rheumatic (I09.1)

Diagnosis Index entries containing back-references to I09.1:
  • Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) I38
    ICD-10-CM Diagnosis Code I38

    Endocarditis, valve unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Includes
    • endocarditis (chronic) NOS
    • valvular incompetence NOS
    • valvular insufficiency NOS
    • valvular regurgitation NOS
    • valvular stenosis NOS
    • valvulitis (chronic) NOS
    Type 1 Excludes
    • congenital insufficiency of cardiac valve NOS (Q24.8)
    • congenital stenosis of cardiac valve NOS (Q24.8)
    • endocardial fibroelastosis (I42.4)
    • endocarditis specified as rheumatic (I09.1)
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
    ICD-10-CM Diagnosis Code R50.9

    Fever, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Fever NOS
    • Fever of unknown origin [FUO]
    • Fever with chills
    • Fever with rigors
    • Hyperpyrexia NOS
    • Persistent fever
    • Pyrexia NOS
    • rheumatic (active) (acute) (chronic) (subacute) I00
      ICD-10-CM Diagnosis Code I00

      Rheumatic fever without heart involvement

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Includes
      • arthritis, rheumatic, acute or subacute
      Type 1 Excludes
      • rheumatic fever with heart involvement (I01.0 -I01.9)

ICD-10-CM Codes Adjacent To I09.1
I07.9 Rheumatic tricuspid valve disease, unspecified
I08 Multiple valve diseases
I08.0 Rheumatic disorders of both mitral and aortic valves
I08.1 Rheumatic disorders of both mitral and tricuspid valves
I08.2 Rheumatic disorders of both aortic and tricuspid valves
I08.3 Combined rheumatic disorders of mitral, aortic and tricuspid valves
I08.8 Other rheumatic multiple valve diseases
I08.9 Rheumatic multiple valve disease, unspecified
I09 Other rheumatic heart diseases
I09.0 Rheumatic myocarditis
I09.1 Rheumatic diseases of endocardium, valve unspecified
I09.2 Chronic rheumatic pericarditis
I09.8 Other specified rheumatic heart diseases
I09.81 Rheumatic heart failure
I09.89 Other specified rheumatic heart diseases
I09.9 Rheumatic heart disease, unspecified
I10 Essential (primary) hypertension
I11 Hypertensive heart disease
I11.0 Hypertensive heart disease with heart failure
I11.9 Hypertensive heart disease without heart failure
I12 Hypertensive chronic kidney disease

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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