DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A48 Other bacterial diseases, not elsewhere classified

  • Header · not billable

A48 is not billable. The category heads 8 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A30-A49 Other bacterial diseases (A30-A49)
  3. A48 Other bacterial diseases, not elsewhere classified
Billable codes
8
Subdivisions
7
CC / MCC codes
2 / 3
HCC V28 codes
3
New FY2027
0
Index entries
54

Codes in A48

  1. A48.0
    Gas gangrene
    BillableMCC263
    Inclusion terms 2

    Inclusion terms

    • Clostridial cellulitis
    • Clostridial myonecrosis
  2. A48.1
    Legionnaires' disease
    BillableMCC282
  3. A48.2
    Nonpneumonic Legionnaires' disease [Pontiac fever]
    Billable
  4. A48.3
    Toxic shock syndrome
    BillableMCC2
    Excludes1 2, Use additional code 1

    Excludes1

    • endotoxic shock NOS (R57.8) R57.8
    • sepsis NOS (A41.9) A41.9

    Use additional code

    • code to identify the organism (B95, B96) B95 B96
  5. A48.4
    Brazilian purpuric fever
    Billable
    Inclusion terms 1

    Inclusion terms

    • Systemic Hemophilus aegyptius infection
  6. A48.5
    Other specified botulism
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Non-foodborne intoxication due to toxins of Clostridium botulinum [C. botulinum]

    Excludes1

    • food poisoning due to toxins of Clostridium botulinum (A05.1) A05.1
  7. A48.51
    Infant botulism
    BillableCC
  8. A48.52
    Wound botulism
    BillableCC
    Inclusion terms 1, Use additional code 1

    Inclusion terms

    • Non-foodborne botulism NOS

    Use additional code

    • code for associated wound
  9. A48.8
    Other specified bacterial diseases
    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 A48

Excludes1

  • actinomycetoma (B47.1) B47.1

Notes that also apply

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

Index entries

  • Aerogenes capsulatus infection → A48.0
  • Myonecrosis, clostridial → A48.0
  • Legionellosis → A48.1
  • Dermatophilosis → A48.8
  • Lepothrix → A48.8
  • Rhinoscleroma → A48.8
  • Scleroma nasi → A48.8
  • Streptotrichosis → A48.8
  • Trichosis axillaris → A48.8
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)anerobic → A48.0
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)anaerobic → A48.0
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)clostridial → A48.0
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)Bacillus welchii → A48.0
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)Clostridium perfringens or welchii → A48.0
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)gas (bacillus) → A48.0
  • Gasgangrene → A48.0
  • Infection, infected, infective (opportunistic)aerogenes capsulatus → A48.0
  • Myositisclostridial → A48.0
  • Disease, diseasedlegionnaires' → A48.1
  • Infection, infected, infective (opportunistic)Legionella pneumophila → A48.1
  • Legionnaires'disease → A48.1
  • Legionnaires'pneumonia → A48.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)Pontiac → A48.2
  • Legionellosisnonpneumonic → A48.2
  • Shocktoxic, syndrome → A48.3
  • Syndrometoxic shock → A48.3
  • Toxic (poisoning)shock syndrome → A48.3
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)Brazilian purpuric → A48.4
  • Botulism (foodborne intoxication)infant → A48.51
  • Botulism (foodborne intoxication)non-foodborne → A48.52
  • Botulism (foodborne intoxication)wound → A48.52
  • Trichomycosisaxillaris → A48.8
  • Infection, infected, infective (opportunistic)Bacillusgas (gangrene) → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECbifermentans → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECgas-forming NEC → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NEChistolyticum → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECnovyi, causing gas gangrene → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECoedematiens → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECsepticum, causing gas gangrene → A48.0
  • Infection, infected, infective (opportunistic)Clostridium NECsordellii, causing gas gangrene → A48.0

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

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