Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesIntestinal infectious diseasesICD-10-CM a01-typhoid-and-paratyphoid-fevers
    Ask Trek AI about this page

    ICD-10-CM Code For Typhoid And Paratyphoid Fevers: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A01 includes diagnoses for typhoid and paratyphoid fevers, covering enteric fevers caused by Salmonella enterica serotypes Typhi and Paratyphi and their systemic complications. These ICD-10-CM diagnosis codes are used to document acute enteric fever presentations, bacteremia, and related gastrointestinal or systemic complications, capturing disease severity and organ involvement. Accurate coding within the ICD-10-CM A01 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Typhoid And Paratyphoid Fevers: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM A01: Typhoid And Paratyphoid Fevers Overview

    The ICD-10-CM A01 group represents typhoid and paratyphoid fevers, systemic infections caused by Salmonella enterica serotypes Typhi and Paratyphi that primarily affect the gastrointestinal tract and reticuloendothelial system. These diagnoses target enteric fever syndromes that can cause bacteremia, fever, abdominal pain, and complications such as intestinal perforation. Accurate coding is important to reflect severity, guide public health reporting, and support appropriate reimbursement tied to documented clinical complexity.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Assign a code from this group when a clinical diagnosis of typhoid or paratyphoid fever is documented by the treating clinician. Use more specific A01 subcodes to reflect complications, severity, and organism specification when documented.

    ICD-10-CM Codes

    11 rows

    ICD-10-CM CodeDescription
    A01.00Typhoid fever, unspecified
    A01.01Typhoid meningitis
    A01.02Typhoid fever with heart involvement
    A01.03Typhoid pneumonia
    A01.04Typhoid arthritis
    A01.05Typhoid osteomyelitis
    A01.09Typhoid fever with other complications
    A01.1Paratyphoid fever A
    A01.2Paratyphoid fever B
    A01.3Paratyphoid fever C
    A01.4Paratyphoid fever, unspecified

    DRG Codes

    3 rows

    DRG CodeDescription
    867Other Infectious and Parasitic Diseases Diagnoses with MCC
    868Other Infectious and Parasitic Diseases Diagnoses with CC
    869Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • An adult presents to the emergency department with 5 days of high-grade fever, severe abdominal pain, diffuse non-bloody diarrhea, relative bradycardia, and a recent history of travel to a country with poor sanitation. Blood cultures and stool cultures are obtained, and clinicians suspect enteric fever requiring inpatient evaluation and antimicrobial therapy; a diagnosis from this group is assigned when Salmonella enterica serotype Typhi or Paratyphi infection is confirmed or strongly suspected. Typical codes: A01.00, A01.1
    • A pediatric outpatient is evaluated for persistent low-grade fever, malaise, and intermittent abdominal discomfort two weeks after returning from international travel; stool PCR returns positive for paratyphi A, but the child is clinically stable and managed with oral antibiotics and outpatient follow-up. A code from this group is used to document the confirmed intestinal Salmonella paratyphi infection in the ambulatory record. Typical codes: A01.02, A01.03
    • A hospitalized older adult develops septicemia with documented Salmonella Typhi bacteremia complicated by localized infection of the gallbladder (chronic carrier state suspected) after an initial enteric fever episode; infectious disease documents systemic complications and need for source evaluation and possible surgical consultation. Codes from this group are assigned to capture the systemic complication and localized intestinal carrier state related to typhoid infection. Typical codes: A01.4, A01.5

    Related Codes

    A00-CHOLERA

    ICD-10-CM Code For Cholera: Group Overview

    A02-OTHER-SALMONELLA-INFECTIONS

    ICD-10-CM Code For Other Salmonella Infections: Group Overview

    A03-SHIGELLOSIS

    ICD-10-CM Code For Shigellosis: Group Overview

    A04-OTHER-BACTERIAL-INTESTINAL-INFECTIONS

    ICD-10-CM Code For Other Bacterial Intestinal Infections: Group Overview

    A05-OTHER-BACTERIAL-FOODBORNE-INTOXICATIONS

    ICD-10-CM Code For Other Bacterial Foodborne Intoxications Not Elsewhere Classified: Group Overview

    A06-AMEBIASIS

    ICD-10-CM Code For Amebiasis: Group Overview

    A07-OTHER-PROTOZOAL-INTESTINAL-DISEASES

    ICD-10-CM Code For Other Protozoal Intestinal Diseases: Group Overview

    Coming soon

    A08-VIRAL-AND-OTHER-SPECIFIED-INTESTINAL-INFECTIONS

    ICD-10-CM Code For Viral And Other Specified Intestinal Infections: Group Overview

    A09-INFECTIOUS-GASTROENTERITIS-AND-COLITIS

    ICD-10-CM Code For Infectious Gastroenteritis And Colitis, Unspecified: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.