ICD-11 classes
12 Diseases of the respiratory system
Sleep-related breathing disorders
7A42 — Sleep-related hypoventilation or hypoxemia disorders
7A42.0 — Obesity hypoventilation syndrome
ICD-11 7A42.0 — Obesity hypoventilation syndrome
Obesity hypoventilation syndrome is characterised by obesity (in adults, > 30 kg/m2) and daytime hypercapnia indicated by arterial partial pressure of carbon dioxide (PaCO2) > 45 mm Hg that cannot be fully attributed to an underlying cardiopulmonary or neurologic disease. Hypercapnia worsens during sleep and is often associated with severe arterial oxygen desaturation. Obstructive sleep apnoea is also present in the majority of cases and should be diagnosed in addition to obesity hypoventilation.Note: A definitive diagnosis requires demonstration of daytime hypercapnia and objective evidence based on polysomnography, with carbon dioxide (CO2) monitoring (by arterial, end-tidal or transcutaneous measures.
It includes 1 item.
- Pickwickian syndrome
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: