DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

B39 Histoplasmosis

  • Header · not billable

B39 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

  • Histoplasmosis → B39.9
  • Cytomycosis (reticuloendothelial) → B39.4
  • Darling's disease or histoplasmosis → B39.4

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B35-B49 Mycoses (B35-B49)
  3. B39 Histoplasmosis
Billable codes
7
Subdivisions
7
CC / MCC codes
1 / 3
HCC V28 codes
0
New FY2027
0
Index entries
21

Codes in B39

  1. B39.0
    Acute pulmonary histoplasmosis capsulati
    BillableMCC
  2. B39.1
    Chronic pulmonary histoplasmosis capsulati
    BillableMCC
  3. B39.2
    Pulmonary histoplasmosis capsulati, unspecified
    BillableMCC
  4. B39.3
    Disseminated histoplasmosis capsulati
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Generalized histoplasmosis capsulati
  5. B39.4
    Histoplasmosis capsulati, unspecified
    Billable
    Inclusion terms 1

    Inclusion terms

    • American histoplasmosis
  6. B39.5
    Histoplasmosis duboisii
    Billable
    Inclusion terms 1

    Inclusion terms

    • African histoplasmosis
  7. B39.9
    Histoplasmosis, unspecified
    Billable

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 B39

Code first

  • associated AIDS (B20) B20

Use additional code

  • code for any associated manifestations, such as:
  • endocarditis (I39) I39
  • meningitis (G02) G02
  • pericarditis (I32) I32
  • retinitis (H32) H32

Notes that also apply

Block B35-B49 instructions (Excludes2 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

  • Cytomycosis (reticuloendothelial) → B39.4
  • Darling's disease or histoplasmosis → B39.4
  • Histoplasmosis → B39.9
  • Histoplasmosiswith pneumonia NEC → B39.2
  • Histoplasmosislung NEC → B39.2
  • Histoplasmosiscapsulati → B39.4
  • HistoplasmosisDarling's → B39.4
  • HistoplasmosisAfrican → B39.5
  • Histoplasmosisduboisii → B39.5
  • Chorioretinitishistoplasmic → B39.9 [H32]
  • Histoplasmosiscapsulatipulmonary → B39.2
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)histoplasmosis → B39.2
  • Histoplasmosiscapsulatidisseminated → B39.3
  • Histoplasmosiscapsulatigeneralized → B39.3
  • Infection, infected, infective (opportunistic)HistoplasmaAmerican → B39.4
  • Infection, infected, infective (opportunistic)Histoplasmacapsulatum → B39.4
  • Chorioretinitisin (due to)histoplasmosis → B39.9 [H32]
  • Histoplasmosiscapsulatipulmonaryacute → B39.0
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)histoplasmosisacute → B39.0
  • Histoplasmosiscapsulatipulmonarychronic → B39.1
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)histoplasmosischronic → B39.1

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

Hierarchy