ICD-11 classes
12 Diseases of the respiratory system
Pleural, diaphragm or mediastinal disorders
CB21 — Pneumothorax
CB21.0 — Spontaneous tension pneumothorax

ICD-11 CB21.0 — Spontaneous tension pneumothorax

A tension pneumothorax is present when the intrapleural pressure is greater than atmospheric throughout expiration and often during inspiration as well. The mechanism responsible for tension pneumothorax is the disruption of the visceral or parietal pleura in such a manner that a one-way valve develops. A tension pneumothorax can occur after any type of pneumothorax; it is independent of the etiology. It can sometimes occur after a spontaneous pneumothorax but is more common after a traumatic pneumothorax, with mechanical ventilation, or during cardiopulmonary resuscitation.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.