ICD-10/A03

A03 ICD 2026 Code: Shigellosis

A03 is the authoritative medical code for Shigellosis. This classification is used in medical billing and clinical recording to specify the clinical criteria for shigellosis (ICD-10-CM A03), ensuring healthcare documentation aligns with 2026 federal coding standards.

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Shigellosis is a non-billable ICD-10-CM category code A03. A more specific billable subcode must be selected for claims submission.

Frequently Asked Questions (FAQ) & Clinical Guidance

Can A03 be billed directly?

No. A03 (Shigellosis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Codes in This Family (6)

Official ICD-10-CM classifications in the same code family as A03, with their registry titles.

  • 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

Related Codes & Numerical Sequence (Crawl Map)

Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:

ICD Code A01 Typhoid and paratyphoid fevers
ICD Code A02 Other salmonella infections
ICD Code A04 Other bacterial intestinal infections
ICD Code A05 Other bacterial foodborne intoxications, not elsewhere classified
ICD Code A07 Other protozoal intestinal diseases
ICD Code A08 Viral and other specified intestinal infections
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