DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

B74 Filariasis

  • Header · not billable

B74 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B65-B83 Helminthiases (B65-B83)
  3. B74 Filariasis
Billable codes
7
Subdivisions
7
CC / MCC codes
7 / 0
HCC V28 codes
0
New FY2027
0
Index entries
72

Codes in B74

  1. B74.0
    Filariasis due to Wuchereria bancrofti
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Bancroftian elephantiasis
    • Bancroftian filariasis
  2. B74.1
    Filariasis due to Brugia malayi
    BillableCC
  3. B74.2
    Filariasis due to Brugia timori
    BillableCC
  4. B74.3
    Loiasis
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Calabar swelling
    • Eyeworm disease of Africa
    • Loa loa infection
  5. B74.4
    Mansonelliasis
    BillableCC
    Inclusion terms 3

    Inclusion terms

    • Infection due to Mansonella ozzardi
    • Infection due to Mansonella perstans
    • Infection due to Mansonella streptocerca
  6. B74.8
    Other filariases
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Dirofilariasis
  7. B74.9
    Filariasis, unspecified
    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 B74

Excludes2

  • onchocerciasis (B73) B73
  • tropical (pulmonary) eosinophilia NOS (J82.89) J82.89

Notes that also apply

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

Index entries

  • Bancroft's filariasis → B74.0
  • Wuchereria (bancrofti) infestation → B74.0
  • Wuchereriasis → B74.0
  • Calabar swelling → B74.3
  • Eyeworm disease of Africa → B74.3
  • Loa loa (loiasis) → B74.3
  • Loiasis (with conjunctival infestation) (eyelid) → B74.3
  • Acanthocheilonemiasis → B74.4
  • Dipetalonemiasis → B74.4
  • Mansonelliasis, mansonellosis → B74.4
  • Dirofilariasis → B74.8
  • Mumu → B74.9 [N51]
  • Elephantiasis (nonfilarial)bancroftian → B74.0
  • Infection, infected, infective (opportunistic)Wuchereria (bancrofti) → B74.0
  • InfestationWuchereria (bancrofti) → B74.0
  • Infection, infected, infective (opportunistic)Brugia (malayi) → B74.1
  • InfestationBrugia (malayi) → B74.1
  • Disease, diseasedeyeworm of Africa → B74.3
  • Infection, infected, infective (opportunistic)Loa loa → B74.3
  • Infestationeyeworm → B74.3
  • InfestationLoa loa → B74.3
  • Swelling (of)Calabar → B74.3
  • Infection, infected, infective (opportunistic)Acanthocheilonema (perstans) (streptocerca) → B74.4
  • Infection, infected, infective (opportunistic)Dipetalonema (perstans) (streptocerca) → B74.4
  • Infection, infected, infective (opportunistic)Mansonella (ozzardi) (perstans) (streptocerca) → B74.4
  • InfestationAcanthocheilonema (perstans) (streptocerca) → B74.4
  • InfestationAgamofilaria streptocerca → B74.4
  • InfestationMansonella (ozzardi) (perstans) (streptocerca) → B74.4
  • Infection, infected, infective (opportunistic)Dirofilaria → B74.8
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)chylous (filarial) → B74.9
  • Chylocele (nonfilarial)filarial → B74.9 [N51]
  • Chylothorax (nonfilarial)filarial → B74.9 [J91.8]
  • Epididymitis (acute) (nonvenereal) (recurrent) (residual)filarial → B74.9 [N51]
  • Infestationfilarial → B74.9
  • Orchitis (gangrenous) (nonspecific) (septic) (suppurative)filarial → B74.9 [N51]
  • Chyluria (nonfilarial)due toWuchereria (bancrofti) → B74.0
  • Elephantiasis (nonfilarial)due toWuchereria (bancrofti) → B74.0
  • Infestationfilarialbancroftian → B74.0
  • Lymphadenitisdue toWuchereria bancrofti → B74.0
  • Lymphangitisdue toWuchereria bancrofti → B74.0

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

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