ICD-10 code for escherichia coli

The ICD-10-CM code for escherichia coli is B96.20 (Unspecified Escherichia coli [E. coli] as the cause of diseases classified elsewhere). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B96.20.

Within B96.2, choose B96.20 (Unspecified Escherichia coli [E. coli] as the cause of diseases classified elsewhere) only when documentation doesn't support a more specific option: Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere (B96.21), other specified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere (B96.22), unspecified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere (B96.23) and other Escherichia coli [E. coli] as the cause of diseases classified elsewhere (B96.29).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.