DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 1

A30-A49 Other bacterial diseases (A30-A49)

Block A30-A49 groups 18 categories with 115 billable codes in FY2027.

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A30-A49 Other bacterial diseases (A30-A49)

Neighbouring blocks

Categories
18
Billable codes
115
CC codes
63
MCC codes
41
HCC V28 codes
33
New FY2027
0

Categories in A30-A49

  • A30

    Leprosy [Hansen's disease]

    Leprosy → A30.-

    • 8 billable codes
    • 8 CC
  • A31

    Infection due to other mycobacteria

    Buruli ulcer → A31.1

    • 5 billable codes
    • 5 CC
    • 2 with HCC
  • A32

    Listeriosis

    Listeriosis, listerellosis → A32.9

    • 8 billable codes
    • 7 CC
    • 1 MCC
    • 1 with HCC
  • A33

    Tetanus neonatorum

    Trismusnewborn → A33

    • Billable, no subdivisions
    • 1 MCC
  • A34

    Obstetrical tetanus

    Tetanus, tetanic (cephalic) (convulsions)obstetrical → A34

    • Billable, no subdivisions
    • 1 CC
  • A35

    Other tetanus

    Tetanus, tetanic (cephalic) (convulsions) → A35

    • Billable, no subdivisions
    • 1 MCC
  • A36

    Diphtheria

    Bretonneau's disease or angina → A36.0

    • 12 billable codes
    • 12 CC
    • 1 with HCC
  • A37

    Whooping cough

    Pertussis → A37.90

    • 8 billable codes
    • 4 CC
    • 4 MCC
  • A38

    Scarlet fever

    Ulcerosa scarlatina → A38.8

    • 4 billable codes
    • 4 CC
  • A39

    Meningococcal infection

    Meningococcemia → A39.4

    • 15 billable codes
    • 5 CC
    • 10 MCC
    • 5 with HCC
  • A40

    Streptococcal sepsis

    Pneumococcemia → A40.3

    • 5 billable codes
    • 5 MCC
    • 5 with HCC
  • A41

    Other sepsis

    Septicemia → A41.9

    • 15 billable codes
    • 15 MCC
    • 15 with HCC
  • A42

    Actinomycosis

    Rivalta's disease → A42.2

    • 8 billable codes
    • 7 CC
    • 1 MCC
    • 1 with HCC
  • A43

    Nocardiosis

    Nocardiosis, nocardiasis → A43.9

    • 4 billable codes
    • 4 CC
  • A44

    Bartonellosis

    Bartonellosis → A44.9

    • 4 billable codes
    • 4 CC
  • A46

    Erysipelas

    Erysipelas (gangrenous) (infantile) (newborn) (phlegmonous) (suppurative) → A46

    • Billable, no subdivisions
  • A48

    Other bacterial diseases, not elsewhere classified

    Lepothrix → A48.8

    • 8 billable codes
    • 2 CC
    • 3 MCC
    • 3 with HCC
  • A49

    Bacterial infection of unspecified site

    Colibacillosis → A49.8

    • 7 billable codes

Index main terms

  • Infection, infected, infective (opportunistic) → A31, A39, A40, A41, A42, A48, A49 (77 entries)
  • Sepsis (generalized) (unspecified organism) → A32, A39, A40, A41, A42 (37 entries)
  • Leprosy → A30 (34 entries)
  • Mycobacterium, mycobacterial (infection) → A30, A31 (29 entries)
  • Disease, diseased → A31, A36, A38, A39, A42, A48, A49 (16 entries)
  • Whooping cough → A37 (14 entries)
  • Diphtheria, diphtheritic (gangrenous) (hemorrhagic) → A36 (12 entries)
  • Actinomycosis, actinomycotic → A42 (9 entries)
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) → A32, A37, A39, A42, A48 (9 entries)
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) → A30, A31, A39, A46, A49 (8 entries)
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) → A38, A39, A44, A48 (8 entries)
  • Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) → A36 (7 entries)
  • Syndrome → A39, A48 (7 entries)
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative → A30, A31, A36 (7 entries)
  • Nocardiosis, nocardiasis → A43 (6 entries)

+107 more main terms; the search box finds them by word.

Block instructions

Notes that also apply

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