ICD-10-CM 2027
ICD-10 code for cholera exposure
Contact with and (suspected) exposure to other intestinal infectious diseases
From the official ICD-10-CM alphabetic index entry “Exposure (to) › cholera”. Page updated September 29, 2026.
About coding cholera exposure
The ICD-10-CM code for cholera exposure is Z20.09 (Contact with and (suspected) exposure to other intestinal infectious diseases).
Within Z20.0, choose Z20.09 (other intestinal infectious diseases) only when documentation doesn't support a more specific option: due to Escherichia coli (E. coli) (Z20.01).
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 795 (Normal Newborn, relative weight 0.2022) and DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about cholera exposure ICD-10 codes
What is the ICD-10 code for cholera exposure?
- Z20.09 — Contact with and (suspected) exposure to other intestinal infectious diseases.
Is Z20.09 billable?
- Yes. Z20.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z20.09 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z20.09 a CC or MCC?
- No. Z20.09 is neither a CC nor an MCC under MS-DRG v44.0.