B96.21
BillableShiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere
B96.21 is the ICD-10-CM code for Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere. It is a billable, specific code valid for reimbursement.
A00-B99 Certain infectious and parasitic diseases
Includes
- •E. coli O157:H- (nonmotile) with confirmation of Shiga toxin
- •E. coli O157 with confirmation of Shiga toxin when H antigen is unknown, or is not H7
- •O157:H7 Escherichia coli [E. coli] with or without confirmation of Shiga toxin-production
- •Shiga toxin-producing Escherichia coli [E. coli] O157:H7 with or without confirmation of Shiga toxin-production
- •STEC O157:H7 with or without confirmation of Shiga toxin-production
Frequently asked questions
- What is ICD-10 code B96.21?
- B96.21 is the ICD-10-CM code for "Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere". It falls under A00-B99 Certain infectious and parasitic diseases.
- Is B96.21 a billable code?
- Yes — B96.21 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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