ICD-10 code for cholera

The ICD-10-CM code for cholera is A00.9 (Cholera, unspecified). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on A00.9.

Within A00, choose A00.9 (unspecified) only when documentation doesn't support a more specific option: due to Vibrio cholerae 01, biovar cholerae (A00.0) and due to Vibrio cholerae 01, biovar eltor (A00.1).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 371 (Major Gastrointestinal Disorders and Peritoneal Infections with MCC, relative weight 1.7089), DRG 372 (Major Gastrointestinal Disorders and Peritoneal Infections with CC, relative weight 0.9964) and DRG 373 (Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC, relative weight 0.6941), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.