2027 ICD-10-CM Diagnosis Code A25Rat-bite fevers

ICD-10-CM Codes›A00–B99›A20-A28›A25

ICD-10-CM A25
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A25 is a non-billable ICD-10-CM category code for rat-bite fevers, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A25.0, A25.1, and A25.9.

Code Identity

ICD-10-CM Code
A25
Billable Status
No — Non-Billable Category
Code Describes
Rat-bite fevers
Short Description
Rat-bite fevers
Same as the full description in the CMS dataset.
Chapter
A20-A28
Certain zoonotic bacterial diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA20-A28Certain zoonotic bacterial diseases
CategoryA25Rat-bite fevers
This CodeA25Rat-bite fevers

Specific Coding for Rat-bite feversOverview

Non-specific codes like A25 require more characters. Use one of these billable codes instead:

  • Use A25.0 for Spirillosis

  • Use A25.1 for Streptobacillosis

  • Use A25.9 for Rat-bite fever, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A25: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical InformationClinical

  • Rat-Bite Fever

    a syndrome characterized by recurring fever, rash, and arthralgias occurring days to weeks after a rat bite. the causative agents are either streptobacillus moniliformis or spirillum minus.

Patient EducationClinical

Animal Bites

Wild animals usually avoid people. They might attack, however, if they feel threatened, are sick, or are protecting their young or territory. Attacks by pets are more common. Animal bites rarely are life-threatening, but if they become infected, you can develop serious medical problems.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A25Overview

What is the ICD-10 code for rat-bite fevers?

A25 is the ICD-10-CM category for rat-bite fevers, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is A25 (Rat-bite fevers) a billable code?

No. This is a category header that groups the codes for rat-bite fevers, and headers cannot be submitted on claims. Claims for rat-bite fevers need a more specific code from this category, such as A25.0, A25.1, and A25.9.