ICD-10-CM Tabular Index · Chapter 1 · FY 2027 A28

Other zoonotic bacterial diseases, not elsewhere classified (A28) ICD-10-CM

The A28 code range covers other zoonotic bacterial diseases, not elsewhere classified with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
6
Diagnosis Codes
5
Billable Codes
A28
Code Range
A20–A28
Parent Section
ICD-10-CM

Codes in the A28 Range 6 codes · 5 billable

6 of 6 shown
  • A28 Other zoonotic bacterial diseases, not elsewhere classifiedNon-billable
  • A28.0 Pasteurellosis
  • A28.1 Cat-scratch disease
  • A28.2 Extraintestinal yersiniosis
  • A28.8 Other specified zoonotic bacterial diseases, not elsewhere classified
  • A28.9 Zoonotic bacterial disease, unspecified

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the A28 range.

Actinobacillosis

A disease characterized by suppurative and granulomatous lesions in the respiratory tract, upper alimentary tract, skin, kidneys, joints, and other tissues. Actinobacillus lignieresii infects cattle and sheep while A. equuli infects horses and pigs.

Bacterial Zoonoses

Bacterial infections that may be transmitted between non-human animals and HUMANS.

Cat-Scratch Disease

A self-limiting bacterial infection of the regional lymph nodes caused by AFIPIA felis, a gram-negative bacterium recently identified by the Centers for Disease Control and Prevention and by BARTONELLA HENSELAE. It usually arises one or more weeks following a feline scratch, with raised inflammatory nodules at the site of the scratch being the primary symptom.

Pasteurella Infections

Infections with bacteria of the genus PASTEURELLA.

About the A28 Code Range

Zoonotic bacterial diseases are bacterial infections linked to animals. This category groups those not classified elsewhere.

The subdivisions name specific diseases: A28.0 is Pasteurella infection, A28.1 is cat-scratch disease, and A28.2 is yersiniosis outside the intestines. A28.8 groups other specified diseases, while A28.9 identifies an unspecified zoonotic bacterial disease.

Questions About This Page

How many billable codes are in the A28 range?

Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the A28 range classify?

The range classifies other zoonotic bacterial diseases, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.