7A42 Sleep-related hypoventilation or hypoxemia disorders
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
The primary feature of these disorders is insufficient sleep related ventilation, resulting in abnormally elevated arterial partial pressure of carbon dioxide (PaCO2) during sleep. Sleep-related hypoxemia is diagnosed when overnight monitoring reveals sustained (> 5 minutes) decline in oxygen saturation to ≤ 88% in adults (or ≤ 90% in children) for ≥ 5 minutes. Note: A definitive diagnosis requires objective evidence based on polysomnography as well as carbon dioxide (CO2) monitoring during sleep (by arterial, end-tidal or transcutaneous measures).
sections/codes in this section (7A42-7A42)
- Obesity hypoventilation syndrome (7A42.0)
- Congenital central alveolar sleep-related hypoventilation (7A42.1)
- Non-congenital central hypoventilation with hypothalamic abnormalities (7A42.2)
- Idiopathic central alveolar hypoventilation (7A42.3)
- Sleep-related hypoventilation due to a medication or substance (7A42.4)
- Sleep-related hypoventilation due to medical condition (7A42.5)
- Sleep-related hypoxemia due to a medical condition (7A42.6)
- Other specified sleep-related hypoventilation or hypoxemia disorders (7A42.Y)
- Sleep-related hypoventilation or hypoxemia disorders, unspecified (7A42.Z)
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