What is the ICD-10-CM code for interstitial lung disease?

The primary ICD-10-CM code for interstitial lung disease is J84.9 (Interstitial pulmonary disease, unspecified). There are 32 billable interstitial lung disease codes in FY2027, covering different types and underlying causes.

How many ICD-10-CM codes are there for interstitial lung disease?

There are 39 ICD-10-CM codes for interstitial lung disease in the FY2027 tabular list, of which 32 are billable. These codes fall under Chapter 10 of the ICD-10-CM classification.

Which chapter covers interstitial lung disease in ICD-10-CM?

Interstitial Lung Disease codes are classified in Chapter 10 of the ICD-10-CM tabular list: J00–J99 (Diseases of the Respiratory System).

Interstitial Lung Disease ICD-10-CM codes

ICD-10-CM codes for interstitial lung disease (ILD), including idiopathic interstitial pneumonias, drug-induced ILD, hypersensitivity pneumonitis, and ILD in connective tissue disease.

39 codes, 32 billable. FY2027, valid from October 1, 2026. In chapter 10: Diseases of the Respiratory System.

How to code Interstitial Lung Disease

J84.9 is interstitial pulmonary disease, unspecified, and is the code for ILD NOS. Idiopathic pulmonary fibrosis is J84.112, nonspecific interstitial pneumonitis is J84.113, and cryptogenic organizing pneumonia is J84.116. Pulmonary fibrosis without a stated type is J84.10; see the pulmonary fibrosis guide.

Drug-induced ILD is coded from J70.2 (acute), J70.3 (chronic), or J70.4 (unspecified), with the drug's adverse effect code added. Hypersensitivity pneumonitis is coded from J67, for example J67.9 when the dust is not specified.

ILD from a connective tissue disease uses the combination code for that disease, such as M34.81 for systemic sclerosis, M05.10 for rheumatoid lung disease, or M35.02 for Sjogren syndrome. Progressive fibrosing ILD in these diseases adds J84.170. Pulmonary sarcoidosis is D86.0.

All Interstitial Lung Disease codes

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