2026 ICD-10-CM Diagnosis Code J67.9Hypersensitivity pneumonitis due to unspecified organic dust

ICD-10-CM Codes›J00–J99›J60-J70›J67

ICD-10-CM J67.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J67.9 is a billable ICD-10-CM diagnosis code for hypersensitivity pneumonitis due to unspecified organic dust. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 196 through 198. Coders also document this condition as asthmatic pulmonary alveolitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Lung disease due to external agents.

Code Identity

ICD-10-CM Code
J67.9
Billable Status
Yes — Valid for Submission
Code Describes
Hypersensitivity pneumonitis due to unspecified organic dust
Short Description
Hypersensitivity pneumonitis due to unspecified organic dust
Same as the full description in the CMS dataset.
Parent Code
J67
Hypersensitivity pneumonitis due to organic dust

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ60-J70Lung diseases due to external agents
CategoryJ67Hypersensitivity pneumonitis due to organic dust
This CodeJ67.9Hypersensitivity pneumonitis due to unspecified organic dust

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Asthmatic pulmonary alveolitis
  • Hypersensitivity pneumonitis
  • Sick building syndrome
  • Simple pulmonary alveolitis
  • Storage disease of the lung
  • Summer-type hypersensitivity pneumonitis
  • Tropical pulmonary alveolitis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Allergic alveolitis (extrinsic) NOS
  • Hypersensitivity pneumonitis NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Allergy, allergic(reaction) (to)
      • alveolitis (extrinsic)
    • Disease, diseased
      • lung
        • obstructive (chronic)
          • with
            • alveolitis, allergic
    • Disease, diseased
      • lung
        • obstructive (chronic)
          • with
            • hypersensitivity pneumonitis
    • Obstruction, obstructed, obstructive
      • airway
        • with
          • allergic alveolitis
    • Pneumonitis(acute) (primary)
      • allergic (due to)
    • Pneumonitis(acute) (primary)
      • hypersensitivity

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR RSP013
Lung disease due to external agents
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Sick Building Syndrome

    a group of symptoms that are two- to three-fold more common in those who work in large, energy-efficient buildings, associated with an increased frequency of headaches, lethargy, and dry skin. clinical manifestations include hypersensitivity pneumonitis (alveolitis, extrinsic allergic); allergic rhinitis (rhinitis, allergic, perennial); asthma; infections, skin eruptions, and mucous membrane irritation syndromes. current usage tends to be less restrictive with regard to the type of building and delineation of complaints. (from segen, dictionary of modern medicine, 1992)

Patient EducationClinical

Interstitial Lung Diseases

Interstitial lung disease is the name for a large group of diseases that inflame or scar the lungs. The inflammation and scarring make it hard to get enough oxygen. The scarring is called pulmonary fibrosis.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert J67.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
495.9 Allerg alveol/pneum NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About J67.9Overview

Is J67.9 (Hypersensitivity pneumonitis due to organic dust) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hypersensitivity pneumonitis due to unspecified organic dust on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does J67.9 group to?

When hypersensitivity pneumonitis due to unspecified organic dust is the principal diagnosis on an inpatient stay, it groups to MS-DRG 196, 197, 198, with relative weights from 0.7162 to 1.8872 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of J67.9?

Under the General Equivalence Mappings, hypersensitivity pneumonitis due to unspecified organic dust converts to ICD-9-CM 495.9 (allerg alveol/pneum NOS). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.