A03.9 Shigellosis, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Bacillary dysentery NOS

MS-DRG index

Defines the logic of DRG(s) 371-373 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 004.9 Shigellosis, unspecified

Code annotations containing back-references to A03.9

Back-references to A03.9

• Use Additional: D59.31 Infection-associated hemolytic-uremic syndrome ("Shigella dysenteriae (A03.9)")

Back-references to A03

• Code First: M49 Spondylopathies in diseases classified elsewhere ("enterobacterial infections (A01-A04)")
• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("infectious neonatal diarrhea (A00-A09)")

Diagnosis Index entries for A03.9

• Chinese dysentery
• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › arthritis › bacillary
• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › bacillary
• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › bacillary › arthritis
• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › bacillary › Shigella
• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › Chinese
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › bacillary NOS
• Infection, infected, infective (opportunistic) › Shigella
• Sepsis (generalized) (unspecified organism) › Shigella
• Shigellosis

Nearby codes

• A03.0 Shigellosis due to Shigella dysenteriae
• A03.1 Shigellosis due to Shigella flexneri
• A03.2 Shigellosis due to Shigella boydii
• A03.3 Shigellosis due to Shigella sonnei
• A03.8 Other shigellosis
• A03.9 Shigellosis, unspecified (this code)