2026 ICD-10-CM Diagnosis Code A28.0Pasteurellosis
ICD-10-CM Codes›A00–B99›A20-A28›A28
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A28.0 is a billable ICD-10-CM diagnosis code for pasteurellosis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 14 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bacterial osteomyelitis
- Cat-bite fever
- Cutaneous pasteurellosis
- Infection by Pasteurella multocida
- Infection caused by Rodentibacter pneumotropicus
- Localized septic infection caused by Pasteurella multocida due to cat and/or dog bite
- Mesenteric adenitis caused by Pasteurella multocida
- Mesenteric lymphadenitis
- Pasteurella abscess
- Pasteurella infection
- Pasteurella mesenteric adenitis
- Pasteurella multocida osteomyelitis
- Pasteurella septic infection
- Septicemic pasteurellosis
- Soft tissue pasteurellosis
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Adenitis See Also: Lymphadenitis;
Infection, infected, infective (opportunistic) B99.9
Pasteurella NEC A28.0
multocida A28.0
pseudotuberculosis A28.0
Pasteurella septica A28.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Mesenteric Lymphadenitis
inflammation of lymph nodes in the mesentery.Mesenteric Lymphadenitis
inflammation of the mesenteric lymph nodes.
Patient EducationClinical
Bacterial Infections
Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.
The full article covers:
- What are bacteria?
- How do bacterial infections spread?
- What are the treatments for bacterial infections?
- Can bacterial infections be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert A28.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A28.0Overview
What is the ICD-10 code for pasteurellosis?
The ICD-10-CM code for pasteurellosis is A28.0 (sometimes written as A280). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is A28.0 (Other zoonotic bacterial diseases, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pasteurellosis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does A28.0 group to?
When pasteurellosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A28.0 a CC or MCC?
CMS lists A28.0 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 14 closely related codes in its exclusion list.
What is the ICD-9 equivalent of A28.0?
Under the General Equivalence Mappings, pasteurellosis converts to ICD-9-CM 027.2 (pasteurellosis). The mapping is a direct match.
