B96.21

✓ Billable

Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere

Certain infectious and parasitic diseases (A00-B99)

Also Known As

E. coli O157:H- (nonmotile) with confirmation of Shiga toxinE. coli O157 with confirmation of Shiga toxin when H antigen is unknown, or is not H7O157:H7 Escherichia coli [E. coli] with or without confirmation of Shiga toxin-productionShiga toxin-producing Escherichia coli [E. coli] O157:H7 with or without confirmation of Shiga toxin-productionSTEC O157:H7 with or without confirmation of Shiga toxin-production

✅ No additional coding notes for B96.21

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Code Information

CodeB96.21

BillableYes

ParentB96.2

CategoryCertain infectious and parasitic diseases (A00-B99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)