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  6. 2025 ICD-10-CM Code A01
Version 2025
Non-Billable Code

2025 ICD-10-CM Diagnosis Code A01

Typhoid and paratyphoid fevers

ICD-10-CM Code:
A01
ICD-10 Code for:
Typhoid and paratyphoid fevers
Is Billable?
Not Valid for Submission
Code Navigator:

A01 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of typhoid and paratyphoid fevers. The code is not specific and is NOT valid for the year 2025 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Typhoid and paratyphoid fevers

Non-specific codes like A01 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for typhoid and paratyphoid fevers:

  • A01.0 for Typhoid fever - NON-BILLABLE CODE

  • Use A01.00 for Typhoid fever, unspecified - BILLABLE CODE

  • Use A01.01 for Typhoid meningitis - BILLABLE CODE

  • Use A01.02 for Typhoid fever with heart involvement - BILLABLE CODE

  • Use A01.03 for Typhoid pneumonia - BILLABLE CODE

  • Use A01.04 for Typhoid arthritis - BILLABLE CODE

  • Use A01.05 for Typhoid osteomyelitis - BILLABLE CODE

  • Use A01.09 for Typhoid fever with other complications - BILLABLE CODE

  • Use A01.1 for Paratyphoid fever A - BILLABLE CODE

  • Use A01.2 for Paratyphoid fever B - BILLABLE CODE

  • Use A01.3 for Paratyphoid fever C - BILLABLE CODE

  • Use A01.4 for Paratyphoid fever, unspecified - BILLABLE CODE

Code Classification

  • Certain infectious and parasitic diseases
    (A00–B99)
    • Intestinal infectious diseases
      (A00-A09)
      • Typhoid and paratyphoid fevers
        (A01)

Patient Education


Salmonella Infections

Salmonella is the name of a group of bacteria. In the United States, it is a common cause of foodborne illness. Salmonella occurs in raw poultry, eggs, beef, and sometimes on unwashed fruit and vegetables. You also can get infected after handling pets, especially reptiles like snakes, turtles, and lizards.

Symptoms include:

  • Fever
  • Diarrhea
  • Abdominal cramps
  • Headache
  • Possible nausea, vomiting, and loss of appetite

Symptoms usually last 4-7 days. Your health care provider diagnoses the infection with a stool test. Most people get better without treatment. Infection can be more serious in older adults, infants, and people with chronic health problems. If Salmonella gets into the bloodstream, it can be serious. The usual treatment is antibiotics.

Typhoid fever, a more serious disease caused by Salmonella, is not common in the United States. It frequently occurs in developing countries.

NIH: National Institute of Allergy and Infectious Diseases


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.