ICD-11 code : 7A42.0;
Preferred Label : Obesity hypoventilation syndrome;
ICD-11 definition : Obesity hypoventilation syndrome is characterised by obesity (in adults, Body-Mass-Index
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).;
ICD-11 synonym : OHS - [obesity hypoventilation syndrome]; alveolar hypoventilation syndrome; cardiopulmonary obesity syndrome; alveolus hypoventilation syndrome; Pickwickian syndrome; Extreme obesity with alveolar hypoventilation with Body-Mass-Index unspecified;
ICD-11 acronym : OHS;
ICD-11 inclusion : Pickwickian syndrome;
Origin ID : 1514276050;
Automatic exact mappings (from CISMeF team)
- Currated CISMeF NLP mapping
- ICD-10 Mapping
Obesity hypoventilation syndrome is characterised by obesity (in adults, Body-Mass-Index
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).
