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    v1.0.28
    OpenPayerBilling CodesOther respiratory diseases principally affecting the interstitiumICD-10-CM j84-other-interstitial-pulmonary-diseases
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    ICD-10-CM Code For Other Interstitial Pulmonary Diseases: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group J84 includes various interstitial pulmonary diseases such as idiopathic pulmonary fibrosis, alveolar and interstitial pneumonias, and other forms of pulmonary fibrosis and interstitial lung involvement. These ICD-10-CM diagnosis codes are used to document clinical encounters involving chronic or acute interstitial lung disease, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM J84 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM J84: Other Interstitial Pulmonary Diseases Overview

    This group includes interstitial lung diseases that primarily affect the pulmonary interstitium and supporting structures of the lungs. These conditions involve varying patterns of fibrosis, inflammation, and/or alveolar involvement and can lead to impaired gas exchange and respiratory symptoms. Accurate coding ensures clinical records reflect disease severity and supports appropriate reimbursement for respiratory care.

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    When to Use

    Use a code from this group when clinical documentation indicates an interstitial pulmonary disease such as idiopathic pulmonary fibrosis, nonspecific interstitial pneumonia, or other specified interstitial lung disorders. Select the most specific code that reflects the documented type, acuity, and laterality when applicable to capture the clinical complexity.

    ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    J84.01Alveolar proteinosis
    J84.02Pulmonary alveolar microlithiasis
    J84.03Idiopathic pulmonary hemosiderosis
    J84.09Other alveolar and parieto-alveolar conditions
    J84.10Pulmonary fibrosis, unspecified
    J84.111Idiopathic interstitial pneumonia, not otherwise specified
    J84.112Idiopathic pulmonary fibrosis
    J84.113Idiopathic non-specific interstitial pneumonitis
    J84.114Acute interstitial pneumonitis
    J84.115Respiratory bronchiolitis interstitial lung disease
    J84.116Cryptogenic organizing pneumonia
    J84.117Desquamative interstitial pneumonia
    J84.170Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
    J84.178Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere
    J84.2Lymphoid interstitial pneumonia
    J84.81Lymphangioleiomyomatosis
    J84.82Adult pulmonary Langerhans cell histiocytosis
    J84.83Surfactant mutations of the lung
    J84.841Neuroendocrine cell hyperplasia of infancy
    J84.842Pulmonary interstitial glycogenosis

    Showing 1–20 of 24

    DRG Codes

    5 rows

    DRG CodeDescription
    196Interstitial Lung Disease with MCC
    197Interstitial Lung Disease with CC
    198Interstitial Lung Disease without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An older adult with progressive exertional dyspnea, dry cough, and bibasilar inspiratory crackles undergoes high-resolution CT showing usual interstitial pneumonia pattern with honeycombing and pulmonary function tests revealing restrictive physiology; this is a chronic, progressive fibrosing interstitial lung disease managed longitudinally and coded when documenting the underlying idiopathic or fibrotic interstitial process. Typical codes: J84.112, J84.113
    • A middle-aged patient with known connective tissue disease (e.g., systemic sclerosis) develops subacute worsening shortness of breath and new interstitial infiltrates on imaging during a routine rheumatology visit; the interstitial lung involvement is recorded as a comorbidity of the systemic autoimmune condition and is coded to reflect connective tissue–related interstitial lung disease. Typical codes: J84.81, J84.82
    • An adult presents to the emergency department with acute respiratory decompensation on top of chronic interstitial lung disease; imaging shows superimposed acute exacerbation or acute interstitial pneumonia pattern and the visit is coded to capture the acute exacerbation/acute interstitial process complicating the chronic interstitial disease. Typical codes: J84.10, J84.113

    Related Codes

    J80-ACUTE-RESPIRATORY-DISTRESS-SYNDROME

    ICD-10-CM Code For Acute Respiratory Distress Syndrome: Group Overview

    J81-PULMONARY-EDEMA

    ICD-10-CM Code For Pulmonary Edema: Group Overview

    J82-PULMONARY-EOSINOPHILIA-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Pulmonary Eosinophilia 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.
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