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 CodesCertain zoonotic bacterial diseasesICD-10-CM a21-tularemia
    Ask Trek AI about this page

    ICD-10-CM Code For Tularemia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A21 includes diseases caused by Francisella tularensis such as ulceroglandular, glandular, oculoglandular, oropharyngeal, pneumonic, and typhoidal tularemia. These ICD-10-CM diagnosis codes are used to document clinical presentations that capture the route of infection, organ involvement, and disease severity relevant to tularemia. Accurate coding within the ICD-10-CM A21 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Tularemia: 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 A21: Tularemia Overview

    The diagnoses in this group represent infections caused by Francisella tularensis that can present with skin, lymph node, pulmonary, or systemic involvement. These conditions target multiple organ systems depending on the route of exposure and clinical presentation. Accurate coding matters for reimbursement because it documents disease severity, site of infection, and guides medical necessity for specific treatments.

    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

    Use a code from this group when a clinician documents tularemia with a specified clinical form or when laboratory confirmation of Francisella tularensis is present. Select the code that reflects the anatomic site involved and the clinical presentation to accurately represent the patient encounter.

    ICD-10-CM Codes

    7 rows

    ICD-10-CM CodeDescription
    A21.0Ulceroglandular tularemia
    A21.1Oculoglandular tularemia
    A21.2Pulmonary tularemia
    A21.3Gastrointestinal tularemia
    A21.7Generalized tularemia
    A21.8Other forms of tularemia
    A21.9Tularemia, unspecified

    DRG Codes

    9 rows

    DRG CodeDescription
    177Respiratory Infections and Inflammations with MCC
    178Respiratory Infections and Inflammations with CC
    179Respiratory Infections and Inflammations without CC/MCC
    371Major Gastrointestinal Disorders and Peritoneal Infections with MCC
    372Major Gastrointestinal Disorders and Peritoneal Infections with CC
    373Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC
    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 hunter presents to the emergency department with high fever, severe headache, and tender, swollen regional lymph nodes after handling a rabbit carcass; physical exam shows an ulcerative lesion on the hand at the site of exposure and systemic symptoms suggestive of bacteremia. Cultures are pending but the clinical picture is consistent with ulceroglandular tularemia, so a specific tularemia diagnosis is assigned to guide infectious disease management. Typical codes: A21.0, A21.9.
    • A child is brought to urgent care with sudden onset of high fever, cough, chest pain, and shortness of breath following possible inhalational exposure during outdoor activities; chest imaging demonstrates patchy pneumonitis consistent with primary pulmonary tularemia. Because the presentation is a respiratory-focused severe infection requiring targeted treatment, a pulmonary tularemia code is used. Typical codes: A21.3, A21.9.
    • An elderly patient with diabetes develops rapidly progressive soft tissue infection of the leg after a tick bite, with extensive cellulitis and signs of systemic toxicity; laboratory testing later confirms Francisella tularensis and the patient requires hospitalization for complicated skin and soft tissue infection. The tularemia code for other forms of disease or unspecified site is assigned alongside codes for the soft tissue complication to reflect the infection as a comorbidity driving care. Typical codes: A21.8, A21.9.

    Related Codes

    A20-PLAGUE

    ICD-10-CM Code For Plague: Group Overview

    A22-ANTHRAX

    ICD-10-CM Code For Anthrax: Group Overview

    A23-BRUCELLOSIS

    ICD-10-CM Code For Brucellosis: Group Overview

    A24-GLANDERS-AND-MELIOIDOSIS

    ICD-10-CM Code For Glanders And Melioidosis: Group Overview

    A25-RAT-BITE-FEVERS

    ICD-10-CM Code For Rat Bite Fevers: Group Overview

    A26-ERYSIPELOID-INFECTION

    ICD-10-CM Code For Erysipeloid: Group Overview

    A27-LEPTOSPIROSIS

    ICD-10-CM Code For Leptospirosis: Group Overview

    A28-OTHER-ZOONOTIC-BACTERIAL-DISEASES

    ICD-10-CM Code For Other Zoonotic Bacterial Diseases Not Elsewhere Classified: 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.