B96.21
ICD-10-CMShiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere
This code identifies the presence of Shiga toxin-producing Escherichia coli (STEC) serotype O157 as the causative agent for an infection. It signifies that STEC O157 is the underlying pathogen responsible for a disease process, typically gastrointestinal, that is classified under a different primary diagnosis code.
Apply this code when laboratory confirmation identifies STEC O157 as the etiology of a patient's condition, such as hemorrhagic colitis, hemolytic-uremic syndrome (HUS), or other infections. Documentation must clearly state STEC O157 as the confirmed cause of the "diseases classified elsewhere."
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