CB40.3

ICD-11 MMS 2026-01

Interstitial emphysema

Description

This is a collection of air outside of the normal air passages in the body and instead is found inside the connective tissue of the peribronchovascular sheaths, interlobular septa, and visceral pleura. This collection develops as a result of alveolar and terminal bronchiolar rupture.

Index terms

  • Interstitial emphysema
  • chronic interstitial emphysema
  • interstitial emphysema of lung
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  • interstitial pulmonary emphysema
  • interstitial pulmonary emphysema syndrome
  • Mediastinal emphysema
  • anterior mediastinal air
  • pneumomediastinum

Excludes

  • CA21 – emphysema NOS
  • NE81 – surgical emphysema
  • NF0A.7 – Traumatic subcutaneous emphysema, not elsewhere classified

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

Foundation children elsewhere

  • KB27.0 – Interstitial emphysema originating in the perinatal period
  • KB27.2 – Pneumomediastinum originating in the perinatal period

Sibling codes

  • CB40.0 – Ciliary dyskinesia
  • CB40.1 – Young syndrome
  • CB40.2 – Pulmonary collapse
  • CB40.4 – Compensatory emphysema
  • CB40.Y – Other specified diseases of the respiratory system

Foundation entity

Interstitial emphysema – http://id.who.int/icd/entity/2008095771

Allowed postcoordination axes

Part of: CB40: Certain diseases of the respiratory system › 12: Diseases of the respiratory system