DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I31 Other diseases of pericardium

  • Header · not billable

I31 is not billable. The category heads 8 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I30-I5A Other forms of heart disease (I30-I5A)
  3. I31 Other diseases of pericardium
Billable codes
8
Subdivisions
7
CC / MCC codes
8 / 0
HCC V28 codes
1
New FY2027
0
Index entries
48

Codes in I31

  1. I31.0
    Chronic adhesive pericarditis
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Accretio cordis
    • Adherent pericardium
    • Adhesive mediastinopericarditis
  2. I31.1
    Chronic constrictive pericarditis
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Concretio cordis
    • Pericardial calcification
  3. I31.2
    Hemopericardium, not elsewhere classified
    BillableCC
    Excludes1 2

    Excludes1

    • hemopericardium as current complication following acute myocardial infarction (I23.0) I23.0
    • malignant pericardial effusion (I31.31) I31.31
  4. I31.3
    Pericardial effusion (noninflammatory)
    Header
    Excludes1 1

    Excludes1

    • acute pericardial effusion (I30.9) I30.9
  5. I31.31
    Malignant pericardial effusion in diseases classified elsewhere
    BillableCC17
    Code first 1

    Code first

    • underlying neoplasm (C00-D49) C00 D49
  6. I31.39
    Other pericardial effusion (noninflammatory)
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Chylopericardium
  7. I31.4
    Cardiac tamponade
    BillableCC
    Code first 1

    Code first

    • underlying cause
  8. I31.8
    Other specified diseases of pericardium
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Epicardial plaques
    • Focal pericardial adhesions
  9. I31.9
    Disease of pericardium, unspecified
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Pericarditis (chronic) NOS

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

At I31

Excludes1

  • diseases of pericardium specified as rheumatic (I09.2) I09.2
  • postcardiotomy syndrome (I97.0) I97.0
  • traumatic injury to pericardium (S26.-) S26

Notes that also apply

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

Index entries

  • Accretio cordis (nonrheumatic) → I31.0
  • Cardiosymphysis → I31.0
  • Concretio cordis → I31.1
  • Gouley's syndrome (constrictive pericarditis) → I31.1
  • Pseudocirrhosis, liver, pericardial → I31.1
  • Hemopericardium → I31.2
  • Pneumohemopericardium → I31.2
  • Chylopericardium → I31.39
  • Tamponade, heart → I31.4
  • Pericarditis (with decompensation) (with effusion) → I31.9
  • Adherentpericardium (nonrheumatic) → I31.0
  • Adhesions, adhesive (postinfective)cardiac → I31.0
  • Adhesions, adhesive (postinfective)heart → I31.0
  • Adhesions, adhesive (postinfective)pericardium (nonrheumatic) → I31.0
  • Fibrosis, fibroticpericardium → I31.0
  • Mediastinopericarditisadhesive → I31.0
  • Milkspots → I31.0
  • Pericarditis (with decompensation) (with effusion)adhesive or adherent (chronic) (external) (internal) → I31.0
  • Pericarditis (with decompensation) (with effusion)fibrous → I31.0
  • Pericarditis (with decompensation) (with effusion)obliterans, obliterating → I31.0
  • Pericarditis (with decompensation) (with effusion)plastic → I31.0
  • Soldier'spatches → I31.0
  • Calcificationpericardium → I31.1
  • Concato's disease (pericardial polyserositis)nontubercular → I31.1
  • Pericarditis (with decompensation) (with effusion)calcareous → I31.1
  • Pericarditis (with decompensation) (with effusion)constrictive (chronic) → I31.1
  • Polyserositisdue to pericarditis → I31.1
  • Polyserositispericardial → I31.1
  • Serositis, multiplepericardial → I31.1
  • SyndromeGouley's → I31.1
  • Hemorrhage, hemorrhagic (concealed)pericardium, pericarditis → I31.2
  • Effusionpericardium, pericardial (noninflammatory) → I31.39
  • Cardiactamponade → I31.4
  • Fistula (cutaneous)pleuropericardial → I31.8
  • Mediastinopericarditischronic → I31.8
  • Pericarditis (with decompensation) (with effusion)cholesterol (chronic) → I31.8
  • Pericarditis (with decompensation) (with effusion)neoplastic (chronic) → I31.8
  • Plaque(s)epicardial → I31.8
  • Pericarditis (with decompensation) (with effusion)chronic (nonrheumatic) → I31.9
  • Disease, diseasedConcato's (pericardial polyserositis)nontubercular → I31.1

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

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

Hierarchy