J84.11

Non-Billable

ChapterJ00–J99

Ranksubcategory

Official Description

Idiopathic interstitial pneumonia

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 10: Diseases of the Respiratory System (J00-J99).

Instructional Notes

Excludes1(Not coded here)

lymphoid interstitial pneumonia (J84.2)
pneumocystis pneumonia (B59)

General instructions are available for the parent sections:

View CH10 Notes View J84 Notes View J84.1 Notes

Clinical Hierarchy

CH10Diseases of the respiratory system (J00-J99)

J80-J84Other respiratory diseases principally affecting the interstitium (J80-J84)

J84Other interstitial pulmonary diseases

J84.1Other interstitial pulmonary diseases with fibrosis

J84.11Idiopathic interstitial pneumonia

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

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to J84.11:

subcategoryJ84.1

Other interstitial pulmonary diseases with fibrosis

View context instructions

categoryJ84

Other interstitial pulmonary diseases

View context instructions

chapterCH10

Diseases of the respiratory system (J00-J99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to J84.11. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

19 raw paths

Alveolitis1 unique routes

fibrosing (cryptogenic) (idiopathic)→J84.11

Bronchiolitis (acute) (infective) (subacute)1 unique routes

respiratory, interstitial lung disease→J84.11

Disease, diseased1 unique routes

lung

interstitial

respiratory bronchiolitis→J84.11

Fibrosis, fibrotic3 unique routes

lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial)(2 variants)

acute→J84.11

Hamman-Rich syndrome1 unique routes

Direct index entry→J84.11

Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)8 unique routes

cryptogenic organizing→J84.11

desquamative interstitial→J84.11

interstitial(6 variants)

chronic→J84.11

desquamative→J84.11

idiopathic NOS→J84.11

non-specific

idiopathic→J84.11

usual→J84.11(2 variants)

idiopathic→J84.11

Pneumonitis (acute) (primary)2 unique routes

interstitial (chronic)(2 variants)

acute→J84.11

non-specific

idiopathic→J84.11

Syndrome2 unique routes

acute respiratory distress (adult) (child)

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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