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    v1.0.28
    OpenPayerBilling CodesOther diseases of the respiratory systemICD-10-CM j99-respiratory-disorders-in-diseases-classified-elsewhere
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    ICD-10-CM Code For Respiratory Disorders In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group J99 includes respiratory disorders that arise as manifestations of diseases classified in other chapters, covering conditions such as pulmonary involvement secondary to connective tissue disease, neoplastic disease, or other systemic disorders. These ICD-10-CM diagnosis codes are used to document respiratory complications related to an underlying primary disease, capturing organ involvement and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM J99 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM J99: Respiratory Disorders In Diseases Classified Elsewhere Overview

    The diagnoses in this group represent respiratory complications that occur as manifestations of diseases classified in other chapters of the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM). They target respiratory system involvement such as pulmonary fibrosis, bronchiectasis, or other lung disorders that are secondary to systemic or other primary diseases. Accurate coding is important for complete clinical documentation and can affect reimbursement by linking respiratory findings to the underlying condition.

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    When to Use

    Use a code from this group when a respiratory disorder is documented as resulting from or directly related to an underlying condition classified in another chapter of the International Classification of Diseases, Tenth Revision, Clinical Modification. Apply these codes to capture organ involvement and to link respiratory findings to the primary disease in clinical documentation and billing.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    J99Respiratory disorders in diseases classified elsewhere

    DRG Codes

    3 rows

    DRG CodeDescription
    196Interstitial Lung Disease with MCC
    197Interstitial Lung Disease with CC
    198Interstitial Lung Disease without CC/MCC

    Typical Clinical Scenarios

    • An adult patient with longstanding rheumatic heart disease presents with progressive dyspnea and chronic cough; imaging and pulmonary function testing identify pulmonary vascular congestion and chronic interstitial changes attributable to the underlying cardiac condition, and the respiratory manifestations are documented as respiratory disorders in diseases classified elsewhere. A code from this group is assigned when the respiratory involvement is due to a specified non-respiratory disease rather than a primary pulmonary disorder. Typical codes: J99
    • A hospitalized patient with systemic sclerosis is evaluated for worsening shortness of breath and hypoxemia; pulmonary findings (restrictive lung disease and pulmonary fibrosis) are determined to be secondary to the connective tissue disease, prompting assignment of a respiratory disorder code that reflects respiratory disease in an outside-system condition. Typical codes: J99
    • An emergency department patient with advanced chronic kidney disease develops acute respiratory distress thought to be related to fluid overload and uremic pulmonary complications; because the respiratory condition is a manifestation of the renal disease process, a code from this group is used to capture the respiratory disorder in disease classified elsewhere. Typical codes: J99

    Related Codes

    J96-RESPIRATORY-FAILURE-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Respiratory Failure Not Elsewhere Classified: Group Overview

    J98-OTHER-RESPIRATORY-DISORDERS

    ICD-10-CM Code For Other Respiratory Disorders: 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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