ICD-10-CM 2027
ICD-10 code for salmonella poisoning
From the official ICD-10-CM alphabetic index entry “Poisoning (acute) › Salmonella (arizonae) (cholerae-suis) (enteritidis) (typhimurium)”. Page updated September 29, 2026.
About coding salmonella poisoning
The ICD-10-CM code for salmonella poisoning is A02.9 (Salmonella infection, unspecified).
Within A02, choose A02.9 (Salmonella infection, unspecified) only when documentation doesn't support a more specific option: salmonella enteritis (A02.0), salmonella sepsis (A02.1), localized salmonella infections (A02.2) and other specified salmonella infections (A02.8).
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 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), DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506), DRG 975 (HIV with Major Related Condition with CC, relative weight 1.3252) and DRG 976 (HIV with Major Related Condition without CC/MCC, relative weight 0.8124), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites) and MDC 25 (Human Immunodeficiency Virus Infections), 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 salmonella poisoning ICD-10 codes
What is the ICD-10 code for salmonella poisoning?
- A02.9 — Salmonella infection, unspecified.
Is A02.9 billable?
- Yes. A02.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A02.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A02.9 as a principal diagnosis.
Is A02.9 a CC or MCC?
- A02.9 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.