DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

B57 Chagas' disease

  • Header · not billable

B57 is not billable. The category heads 12 billable codes in FY2027, grouped under 6 subdivisions.

Index → code

  • Chagas' (-Mazza) disease (chronic) → B57.2
  • Chagas' (-Mazza) disease (chronic)acute (with) → B57.1
  • Megaesophagus (functional)in (due to) Chagas' disease → B57.31

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B50-B64 Protozoal diseases (B50-B64)
  3. B57 Chagas' disease
Billable codes
12
Subdivisions
6
CC / MCC codes
12 / 0
HCC V28 codes
0
New FY2027
0
Index entries
24

Codes in B57

  1. B57.0
    Acute Chagas' disease with heart involvement
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Acute Chagas' disease with myocarditis
  2. B57.1
    Acute Chagas' disease without heart involvement
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Acute Chagas' disease NOS
  3. B57.2
    Chagas' disease (chronic) with heart involvement
    BillableCC
    Inclusion terms 4

    Inclusion terms

    • American trypanosomiasis NOS
    • Chagas' disease (chronic) NOS
    • Chagas' disease (chronic) with myocarditis
    • Trypanosomiasis NOS
  4. B57.3
    Chagas' disease (chronic) with digestive system involvement
    Header
  5. B57.30
    Chagas' disease with digestive system involvement, unspecified
    BillableCC
  6. B57.31
    Megaesophagus in Chagas' disease
    BillableCC
  7. B57.32
    Megacolon in Chagas' disease
    BillableCC
  8. B57.39
    Other digestive system involvement in Chagas' disease
    BillableCC
  9. B57.4
    Chagas' disease (chronic) with nervous system involvement
    Header
  10. B57.40
    Chagas' disease with nervous system involvement, unspecified
    BillableCC
  11. B57.41
    Meningitis in Chagas' disease
    BillableCC
  12. B57.42
    Meningoencephalitis in Chagas' disease
    BillableCC
  13. B57.49
    Other nervous system involvement in Chagas' disease
    BillableCC
  14. B57.5
    Chagas' disease (chronic) with other organ involvement
    BillableCC

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 B57

Includes

  • American trypanosomiasis
  • infection due to Trypanosoma cruzi

Notes that also apply

Block B50-B64 instructions (Excludes1 2): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Chagas' (-Mazza) disease (chronic) → B57.2
  • Chagas' (-Mazza) disease (chronic)acute (with) → B57.1
  • Megaesophagus (functional)in (due to) Chagas' disease → B57.31
  • Megacolon (acquired) (functional) (not Hirschsprung's disease) (in)Chagas' disease → B57.32
  • Chagas' (-Mazza) disease (chronic)acute (with)cardiovascular NEC → B57.0
  • Chagas' (-Mazza) disease (chronic)acute (with)myocarditis → B57.0
  • Cardiomyopathy (familial) (idiopathic)inChagas' disease (chronic) → B57.2
  • Chagas' (-Mazza) disease (chronic)withcardiovascular involvement NEC → B57.2
  • Chagas' (-Mazza) disease (chronic)withmyocarditis → B57.2
  • TrypanosomiasiswhereChagas' disease is prevalent → B57.2
  • Chagas' (-Mazza) disease (chronic)withdigestive system involvement → B57.30
  • Chagas' (-Mazza) disease (chronic)withmegaesophagus → B57.31
  • Chagas' (-Mazza) disease (chronic)withmegacolon → B57.32
  • Chagas' (-Mazza) disease (chronic)withnervous system involvement → B57.40
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)Chagas' disease (chronic) → B57.41
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)Chagas' disease (chronic) → B57.42
  • Chagas' (-Mazza) disease (chronic)withspecified organ involvement NEC → B57.5
  • Cardiomyopathy (familial) (idiopathic)inChagas' disease (chronic)acute → B57.0
  • Chagas' (-Mazza) disease (chronic)withdigestive system involvementmegaesophagus → B57.31
  • Chagas' (-Mazza) disease (chronic)withdigestive system involvementmegacolon → B57.32
  • Chagas' (-Mazza) disease (chronic)withdigestive system involvementother specified → B57.39
  • Chagas' (-Mazza) disease (chronic)withnervous system involvementmeningitis → B57.41
  • Chagas' (-Mazza) disease (chronic)withnervous system involvementmeningoencephalitis → B57.42
  • Chagas' (-Mazza) disease (chronic)withnervous system involvementother specified → B57.49

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

Hierarchy