Sleep related hypoventilation in conditions classd elswhr

This code signifies a disorder characterized by insufficient breathing during sleep, leading to elevated carbon dioxide levels, when this hypoventilation is a direct consequence of another underlying medical condition. It represents a secondary form of sleep-related hypoventilation, not a primary sleep disorder. The underlying condition must be separately identifiable and classified elsewhere in the ICD-10-CM system.

Use this code when documentation clearly links sleep-related hypoventilation to a specific co-morbid condition, such as neuromuscular disorders, severe kyphoscoliosis, or chronic obstructive pulmonary disease (COPD). The patient typically presents with symptoms like daytime sleepiness, morning headaches, and evidence of hypercapnia on blood gas analysis, with polysomnography confirming hypoventilation during sleep. Documentation should explicitly state the causal relationship between the underlying condition and the sleep-related hypoventilation.

• Always sequence the underlying condition first, as this code describes a manifestation of that condition.
• Do not use this code for primary sleep hypoventilation disorders; those have specific codes within G47.3.
• Ensure documentation specifies "sleep-related" and identifies the "condition classified elsewhere" to support accurate coding.