DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I09 Other rheumatic heart diseases

  • Header · not billable

I09 is not billable. The category heads 6 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • Concretio cordisrheumatic → I09.2
  • Myopericarditischronic rheumatic → I09.2
  • Rheumatic (acute) (subacute)chronic → I09.89

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I05-I09 Chronic rheumatic heart diseases (I05-I09)
  3. I09 Other rheumatic heart diseases
Billable codes
6
Subdivisions
5
CC / MCC codes
3 / 0
HCC V28 codes
1
New FY2027
0
Index entries
55

Codes in I09

  1. I09.0
    Rheumatic myocarditis
    BillableCC
    Excludes1 1

    Excludes1

    • myocarditis not specified as rheumatic (I51.4) I51.4
  2. I09.1
    Rheumatic diseases of endocardium, valve unspecified
    Billable
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Rheumatic endocarditis (chronic)
    • Rheumatic valvulitis (chronic)

    Excludes1

    • endocarditis, valve unspecified (I38) I38
  3. I09.2
    Chronic rheumatic pericarditis
    BillableCC
    Inclusion terms 3, Excludes1 1

    Inclusion terms

    • Adherent pericardium, rheumatic
    • Chronic rheumatic mediastinopericarditis
    • Chronic rheumatic myopericarditis

    Excludes1

    • chronic pericarditis not specified as rheumatic (I31.-) I31
  4. I09.8
    Other specified rheumatic heart diseases
    Header
  5. I09.81
    Rheumatic heart failure
    BillableCC226
    Use additional code 1

    Use additional code

    • code to identify type of heart failure (I50.-) I50
  6. I09.89
    Other specified rheumatic heart diseases
    Billable
    Inclusion terms 1

    Inclusion terms

    • Rheumatic disease of pulmonary valve
  7. I09.9
    Rheumatic heart disease, unspecified
    Billable
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Rheumatic carditis

    Excludes1

    • rheumatoid carditis (M05.31) M05.31

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • Cardiomyopathy (familial) (idiopathic)rheumatic → I09.0
  • Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile)rheumatic (chronic) (inactive) (with chorea) → I09.0
  • Rheumatic (acute) (subacute)degeneration, myocardium → I09.0
  • Rheumatic (acute) (subacute)myocarditis (chronic) (inactive) (with chorea) → I09.0
  • Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)rheumatic (chronic) (inactive) (with chorea) → I09.1
  • Concretio cordisrheumatic → I09.2
  • Myopericarditischronic rheumatic → I09.2
  • Rheumatic (acute) (subacute)adherent pericardium → I09.2
  • Pancarditis (acute) (chronic)rheumatic → I09.89
  • Rheumatic (acute) (subacute)chronic → I09.89
  • Degeneration, degenerativemyocardial, myocardium (fatty) (hyaline) (senile)with rheumatic fever (conditions in I00) → I09.0
  • Insufficiency, insufficientmyocardial, myocardium (with arteriosclerosis)rheumatic → I09.0
  • Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile)withrheumatic fever (conditions in I00) → I09.0
  • Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)with rheumatic fever (conditions in I00)inactive or quiescent (with chorea) → I09.1
  • Adherentpericardium (nonrheumatic)rheumatic → I09.2
  • Adhesions, adhesive (postinfective)cardiacrheumatic → I09.2
  • Adhesions, adhesive (postinfective)heartrheumatic → I09.2
  • Adhesions, adhesive (postinfective)pericardium (nonrheumatic)rheumatic → I09.2
  • Mediastinopericarditischronicrheumatic → I09.2
  • Pericarditis (with decompensation) (with effusion)with rheumatic fever (conditions in I00)inactive or quiescent → I09.2
  • Pericarditis (with decompensation) (with effusion)adhesive or adherent (chronic) (external) (internal)rheumatic → I09.2
  • Pericarditis (with decompensation) (with effusion)chronic (nonrheumatic)rheumatic → I09.2
  • Pericarditis (with decompensation) (with effusion)rheumatic (active) (acute) (with effusion) (with pneumonia)chronic or inactive (with chorea) → I09.2
  • Rheumatic (acute) (subacute)pericarditis (active) (acute) (with effusion) (with pneumonia)chronic or inactive → I09.2
  • Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)pulmonary (chronic) (heart) (valve)rheumatic (chronic) (inactive) (with chorea) → I09.89
  • Hypertrophy, hypertrophiccardiac (chronic) (idiopathic)rheumatic (with chorea) → I09.89
  • Disease, diseasedheart (organic)rheumatic (chronic) (inactive) (old) (quiescent) (with chorea) → I09.9
  • Failure, failedheart (acute) (senile) (sudden)rheumatic (chronic) (inactive) → I09.9
  • Degeneration, degenerativemyocardial, myocardium (fatty) (hyaline) (senile)with rheumatic fever (conditions in I00)inactive or quiescent (with chorea) → I09.0
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)rheumatic (active) (acute) (chronic) (subacute)inactive or quiescent withmyocarditis, myocardial degeneration (conditions in I51.4) → I09.0
  • Insufficiency, insufficientmyocardial, myocardium (with arteriosclerosis)withrheumatic fever (conditions in I00) → I09.0
  • Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile)withrheumatic fever (conditions in I00)inactive or quiescent (with chorea) → I09.0
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)rheumatic (active) (acute) (chronic) (subacute)inactive or quiescent withendocarditis → I09.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)rheumatic (active) (acute) (chronic) (subacute)inactive or quiescent withpericarditis → I09.2
  • Failure, failedheart (acute) (senile) (sudden)congestiverheumatic (chronic) (inactive) (with chorea) → I09.81
  • Failure, failedventricularleftrheumatic (chronic) (inactive) (with chorea) → I09.81
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)rheumatic (active) (acute) (chronic) (subacute)inactive or quiescent withheart failure (congestive) (conditions in category I50.) → I09.81
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)rheumatic (active) (acute) (chronic) (subacute)inactive or quiescent withleft ventricular failure (conditions in I50.1-I50.4-) → I09.81
  • Arteritiscoronary (artery)rheumaticchronic → I09.89
  • Disease, diseasedheart (organic)rheumatic (chronic) (inactive) (old) (quiescent) (with chorea)specified NEC → I09.89

15 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

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