CB03.4

ICD-11 MMS 2026-01

Idiopathic pulmonary fibrosis

Description

Idiopathic pulmonary fibrosis (IPF) is defined as a specific form of chronic, progressive fibrosing interstitial pneumonia (pneumonitis) of unknown cause, occurring primarily in older adults, limited to the lungs, and associated with the histopathologic and/or radiologic pattern of UIP (Usual Interstitial Pneumonia). The definition of IPF requires the exclusion of other forms of interstitial pneumonia (pneumonitis) including other idiopathic interstitial pneumonias (pneumonitis) and Interstitial Lung Disease (ILD) associated with environmental exposure, medication, or systemic disease.

Index terms

  • Idiopathic pulmonary fibrosis
  • IPF - [Idiopathic pulmonary fibrosis]
  • fibrosing alveolitis
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  • fibrosing lung disease
  • fibrosing pneumonitis
  • idiopathic lung fibrosis
  • interstitial pulmonary fibrosis
  • pulmonary fibrosis NOS

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • CB03.0 – Acute interstitial pneumonitis
  • CB03.1 – Combined pulmonary fibrosis and emphysema syndrome
  • CB03.2 – Cryptogenic organizing pneumonitis
  • CB03.3 – Desquamative interstitial pneumonitis
  • CB03.5 – Lymphoid interstitial pneumonia
  • CB03.6 – Respiratory bronchiolitis - interstitial lung disease
  • CB03.Y – Other specified idiopathic interstitial pneumonitis
  • CB03.Z – Idiopathic interstitial pneumonitis, unspecified

Foundation entity

Idiopathic pulmonary fibrosis – http://id.who.int/icd/entity/1074069640

Allowed postcoordination axes

Part of: CB03: Idiopathic interstitial pneumonitis › 12: Diseases of the respiratory system