DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A03 Shigellosis

  • Header · not billable

A03 is not billable. The category heads 6 billable codes in FY2027: the 6 codes directly below it.

Index → code

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A00-A09 Intestinal infectious diseases (A00-A09)
  3. A03 Shigellosis
Billable codes
6
Subdivisions
6
CC / MCC codes
1 / 0
HCC V28 codes
0
New FY2027
0
Index entries
61

Codes in A03

  1. A03.0
    Shigellosis due to Shigella dysenteriae
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Group A shigellosis [Shiga-Kruse dysentery]
  2. A03.1
    Shigellosis due to Shigella flexneri
    Billable
    Inclusion terms 1

    Inclusion terms

    • Group B shigellosis
  3. A03.2
    Shigellosis due to Shigella boydii
    Billable
    Inclusion terms 1

    Inclusion terms

    • Group C shigellosis
  4. A03.3
    Shigellosis due to Shigella sonnei
    Billable
    Inclusion terms 1

    Inclusion terms

    • Group D shigellosis
  5. A03.8
    Other shigellosis
    Billable
  6. A03.9
    Shigellosis, unspecified
    Billable
    Inclusion terms 1

    Inclusion terms

    • Bacillary dysentery NOS

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

Notes that also apply

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

Index entries

  • Schmitz (-Stutzer) dysentery → A03.0
  • Shiga (-Kruse) dysentery → A03.0
  • Shiga's bacillus → A03.0
  • Flexner's dysentery → A03.1
  • Hiss-Russell dysentery → A03.1
  • Boyd's dysentery → A03.2
  • Flexner-Boyd dysentery → A03.2
  • Sonne dysentery → A03.3
  • Chinese dysentery → A03.9
  • Shigellosis → A03.9
  • BacillusShiga's → A03.0
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Schmitz (-Stutzer) → A03.0
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Shiga (-Kruse) → A03.0
  • ShigellosisGroup A → A03.0
  • BacillusFlexner's → A03.1
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory)Flexner's (ulcerative) → A03.1
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Flexner's → A03.1
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Hiss-Russell → A03.1
  • ShigellosisGroup B → A03.1
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Boyd's → A03.2
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Flexner-Boyd → A03.2
  • ShigellosisGroup C → A03.2
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Sonne → A03.3
  • ShigellosisGroup D → A03.3
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)bacillary → A03.9
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)Chinese → A03.9
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)bacillary NOS → A03.9
  • Infection, infected, infective (opportunistic)Shigella → A03.9
  • Sepsis (generalized) (unspecified organism)Shigella → A03.9
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)bacillarySchmitz (-Stutzer) → A03.0
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)bacillaryShiga (-Kruse) → A03.0
  • Infection, infected, infective (opportunistic)BacillusShiga (-Kruse) → A03.0
  • Infection, infected, infective (opportunistic)Shigelladysenteriae → A03.0
  • Infection, infected, infective (opportunistic)ShigellaSchmitz (-Stutzer) → A03.0
  • Infection, infected, infective (opportunistic)Shigellaschmitzii → A03.0
  • Infection, infected, infective (opportunistic)Shigellashigae → A03.0
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)bacillaryFlexner → A03.1
  • Infection, infected, infective (opportunistic)BacillusFlexner's → A03.1
  • Infection, infected, infective (opportunistic)Shigellaflexneri → A03.1
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)bacillaryBoyd → A03.2

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

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