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    OpenPayerBilling CodesInfluenza and pneumoniaICD-10-CM j17-pneumonia-in-diseases-classified-elsewhere
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    ICD-10-CM Code For Pneumonia In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group J17 includes pneumonias that are manifestations of other specified diseases classified elsewhere, capturing infections of the lung that are secondary to or associated with another documented condition. These ICD-10-CM diagnosis codes are used to document clinical scenarios where pneumonia occurs in the context of another primary disease, capturing disease relationships and additional organ involvement. Accurate coding within the ICD-10-CM J17 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM J17: Pneumonia In Diseases Classified Elsewhere Overview

    The ICD-10-CM J17 group represents pneumonias that occur as manifestations of other specified diseases classified elsewhere in the International Classification of Diseases, 10th Revision, Clinical Modification. These codes identify lung infection that is directly linked to an underlying disorder coded separately, such as aspiration or systemic infections affecting the respiratory tract. Accurate coding ensures the principal disease and the associated pneumonia are both documented, supporting complete clinical records and appropriate reimbursement.

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    When to Use

    Use a code from this group when pneumonia is explicitly documented as occurring in the context of another underlying disease that has its own code in the International Classification of Diseases, 10th Revision, Clinical Modification. Apply the underlying condition code first followed by the appropriate J17 code to indicate the pneumonia is associated with that disease.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    J17Pneumonia in diseases classified elsewhere

    DRG Codes

    3 rows

    DRG CodeDescription
    177Respiratory Infections and Inflammations with MCC
    178Respiratory Infections and Inflammations with CC
    179Respiratory Infections and Inflammations without CC/MCC

    Typical Clinical Scenarios

    • An elderly patient with advanced chronic obstructive pulmonary disease (COPD) admitted from a long-term care facility after several days of fever, increased cough, and purulent sputum; chest imaging shows multilobar airspace consolidation, and microbiologic testing identifies pneumonia due to aspiration of oral secretions related to poor swallow reflex. A code from this group is assigned because the pneumonia is occurring in the setting of another underlying condition that led to the infectious process. Typical codes: J17
    • A middle-aged hospitalized patient with poorly controlled neurologic disease (recent stroke) who develops fever and hypoxia while on enteral feeding; clinical exam and chest x-ray are consistent with aspiration pneumonia attributable to the stroke-related dysphagia. A diagnosis from this group is used to indicate pneumonia that arose as a consequence of the neurologic disorder classified elsewhere. Typical codes: J17
    • A young adult with a known immune deficiency presenting to the emergency department with acute onset fever, productive cough, and rapid decline in oxygenation requiring supplemental oxygen; sputum cultures grow an organism commonly associated with pneumonia in immunocompromised hosts, and documentation ties the pulmonary infection to the underlying immunodeficiency. The code in this group is selected to denote pneumonia that is a manifestation of another disease process. Typical codes: J17

    Related Codes

    J09-INFLUENZA-DUE-TO-CERTAIN-IDENTIFIED-INFLUENZA-VIRUSES

    ICD-10-CM Code For Influenza Due To Certain Identified Influenza Viruses: Group Overview

    J10-INFLUENZA-DUE-TO-OTHER-IDENTIFIED-VIRUS

    ICD-10-CM Code For Influenza Due To Other Identified Influenza Virus: Group Overview

    J11-INFLUENZA-UNIDENTIFIED-VIRUS

    ICD-10-CM Code For Influenza Due To Unidentified Influenza Virus: Group Overview

    J12-VIRAL-PNEUMONIA-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Viral Pneumonia Not Elsewhere Classified: Group Overview

    J13-PNEUMONIA-DUE-TO-STREPTOCOCCUS-PNEUMONIAE

    ICD-10-CM Code For Pneumonia Due To Streptococcus Pneumoniae: Group Overview

    J14-PNEUMONIA-DUE-TO-HEMOPHILUS-INFLUENZAE

    ICD-10-CM Code For Pneumonia Due To Hemophilus Influenzae: Group Overview

    J18-PNEUMONIA-UNSPECIFIED-ORGANISM

    ICD-10-CM Code For Pneumonia Unspecified Organism: 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.
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