J84
Non-Billable

Other interstitial pulmonary diseases

Non-Billable / Non-Specific Code

What is Other interstitial pulmonary diseases?

ICD-10-CM J84 is the diagnosis code for Other interstitial pulmonary diseases. This code falls under the section "Other respiratory diseases principally affecting the interstitium" within Chapter 10 — Diseases of the respiratory system (J00-J99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1
â„šī¸ Excludes2

Coding Guidelines for J84

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as J84. They are mutually exclusive:

  • drug-induced interstitial lung disorders (J70.2-J70.4)
  • interstitial emphysema (J98.2)

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in J84. If the patient has both, code each condition separately:

  • lung diseases due to external agents (J60-J70)

ICD-10-CM Code Hierarchy

Understanding where J84 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 5 entries
J84.0Alveolar and parieto-alveolar conditionsNon-BillableJ84.01Alveolar proteinosisBillableJ84.02Pulmonary alveolar microlithiasisBillableJ84.03Idiopathic pulmonary hemosiderosisBillableJ84.09Other alveolar and parieto-alveolar conditionsBillableJ84.1Other interstitial pulmonary diseases with fibrosisNon-BillableJ84.10Pulmonary fibrosis, unspecifiedBillableJ84.11Idiopathic interstitial pneumoniaNon-BillableJ84.111Idiopathic interstitial pneumonia, not otherwise specifiedBillableJ84.112Idiopathic pulmonary fibrosisBillableJ84.113Idiopathic non-specific interstitial pneumonitisBillableJ84.114Acute interstitial pneumonitisBillableJ84.115Respiratory bronchiolitis interstitial lung diseaseBillableJ84.116Cryptogenic organizing pneumoniaBillableJ84.117Desquamative interstitial pneumoniaBillableJ84.17Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhereNon-BillableJ84.170Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhereBillableJ84.178Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhereBillableJ84.2Lymphoid interstitial pneumoniaBillableJ84.8Other specified interstitial pulmonary diseasesNon-BillableJ84.81LymphangioleiomyomatosisBillableJ84.82Adult pulmonary Langerhans cell histiocytosisBillableJ84.83Surfactant mutations of the lungBillableJ84.84Other interstitial lung diseases of childhoodNon-BillableJ84.841Neuroendocrine cell hyperplasia of infancyBillableJ84.842Pulmonary interstitial glycogenosisBillableJ84.843Alveolar capillary dysplasia with vein misalignmentBillableJ84.848Other interstitial lung diseases of childhoodBillableJ84.89Other specified interstitial pulmonary diseasesBillableJ84.9Interstitial pulmonary disease, unspecifiedBillable
Related Codes

Frequently Asked Questions

Is J84 a billable ICD-10-CM code?

No, J84 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does J84 mean?

J84 is the ICD-10-CM diagnosis code for "Other interstitial pulmonary diseases". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is J84 in?

J84 is located in Section J80-J84 — "Other respiratory diseases principally affecting the interstitium" within Chapter 10 of the ICD-10-CM Tabular List.

What are the sub-codes of J84?

J84 has 5 sub-code(s) that provide more specific detail: J84.0, J84.1, J84.2, J84.8, J84.9.

When should I use J84?

Use J84 when the patients documented diagnosis matches "Other interstitial pulmonary diseases" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Other interstitial pulmonary diseases?

The ICD-10-CM code for Other interstitial pulmonary diseases is J84.

Can J84 be used for primary diagnosis?

No, J84 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is J84 in?

J84 is in Chapter 10 of the ICD-10-CM Tabular List.

What conditions are excluded from J84?

Type 1 Excludes for J84 include: drug-induced interstitial lung disorders (J70.2-J70.4); interstitial emphysema (J98.2).

Is J84 valid for 2026?

Yes, J84 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousJ82.89Other pulmonary eosinophilia, not elsewhere classifiedNext →J84.0Alveolar and parieto-alveolar conditions
Code Details
J84
Other interstitial pulmonary diseases
Non-Billable / Non-Specific Code
10 — Diseases of the respiratory system (J00-J99)
J80-J84 — Other respiratory diseases principally affecting the interstitium
2026 ICD-10-CM