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    v1.0.28
    OpenPayerBilling CodesLung diseases due to external agentsICD-10-CM j64-unspecified-pneumoconiosis
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    ICD-10-CM Code For Unspecified Pneumoconiosis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group J64 includes unspecified pneumoconiosis, covering lung fibrosis caused by inhalation of dusts when a more specific pneumoconiosis code is not available or documented. These ICD-10-CM diagnosis codes are used to document occupational or environmental lung disease, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM J64 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM J64: Unspecified Pneumoconiosis Overview

    The ICD-10-CM J64 group represents unspecified pneumoconiosis, a category of occupational or environmental lung disease caused by inhalation of dusts leading to pulmonary fibrosis and impaired respiratory function. These diagnoses target the respiratory system and occupational lung injury. Accurate coding matters for proper clinical documentation and impacts reimbursement and occupational health reporting.

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    When to Use

    Use a code from this group when a clinician documents pneumoconiosis without specifying the causative dust or when documentation does not support a more specific pneumoconiosis code. These codes apply in clinical records and claims when the respiratory condition is attributed to dust exposure but lacks detailed classification.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    J64Unspecified pneumoconiosis

    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 elderly retired construction worker with progressive exertional dyspnea and a chronic nonproductive cough is evaluated in pulmonary clinic after serial chest imaging shows diffuse interstitial fibrosis without a definitive occupational exposure-specific pattern; there is no identified causative mineral on history or pathology. The clinician assigns a diagnosis from this group when pneumoconiosis is suspected based on radiographic and clinical features but the specific type cannot be determined. Typical codes: J64.
    • A middle-aged former coal miner presents to the emergency department with acute worsening of baseline breathlessness and hypoxemia after a recent respiratory infection; chest radiograph demonstrates extensive bilateral interstitial markings consistent with advanced pneumoconiosis but no clear etiology is established from history or available records. Because the patient has known chronic lung disease consistent with pneumoconiosis of unspecified type contributing to the acute decompensation, a code from this group is used as part of the encounter diagnoses. Typical codes: J64.
    • A working-age industrial worker undergoing preoperative evaluation for elective abdominal surgery is found to have reduced pulmonary function and imaging evidence of diffuse pneumoconiosis changes, but prior occupational records and pathology are inconclusive regarding the exact agent. For perioperative risk assessment and medical optimization, the unspecified pneumoconiosis diagnosis is recorded when the presence of pneumoconiosis is documented but the specific causative dust cannot be identified. Typical codes: J64.

    Related Codes

    J60-COALWORKERS-PNEUMOCONIOSIS

    ICD-10-CM Code For Coalworker's Pneumoconiosis: Group Overview

    J61-PNEUMOCONIOSIS-DUE-TO-ASBESTOS

    ICD-10-CM Code For Pneumoconiosis Due To Asbestos And Other Mineral Fibers: Group Overview

    J62-PNEUMOCONIOSIS-DUE-TO-SILICA

    ICD-10-CM Code For Pneumoconiosis Due To Dust Containing Silica: Group Overview

    J63-PNEUMOCONIOSIS-DUE-TO-OTHER-INORGANIC-DUSTS

    ICD-10-CM Code For Pneumoconiosis Due To Other Inorganic Dusts: Group Overview

    J65-PNEUMOCONIOSIS-ASSOCIATED-WITH-TUBERCULOSIS

    ICD-10-CM Code For Pneumoconiosis Associated With Tuberculosis: Group Overview

    J66-AIRWAY-DISEASE-DUE-TO-SPECIFIC-ORGANIC-DUST

    ICD-10-CM Code For Airway Disease Due To Specific Organic Dust: Group Overview

    J67-HYPERSENSITIVITY-PNEUMONITIS-DUE-TO-ORGANIC-DUST

    ICD-10-CM Code For Hypersensitivity Pneumonitis Due To Organic Dust: Group Overview

    J68-RESPIRATORY-CONDITIONS-DUE-TO-INHALATION

    ICD-10-CM Code For Respiratory Conditions Due To Inhalation Of Chemicals Gases Fumes And Vapors: Group Overview

    J69-PNEUMONITIS-DUE-TO-SOLIDS-AND-LIQUIDS

    ICD-10-CM Code For Pneumonitis Due To Solids And Liquids: Group Overview

    J70-RESPIRATORY-CONDITIONS-DUE-TO-OTHER-EXTERNAL-AGENTS

    ICD-10-CM Code For Respiratory Conditions Due To Other External Agents: 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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