ICD-10 Code G47.36 – Sleep Related Hypoventilation in Conditions Classified Elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.36 – Sleep related hypoventilation in conditions classified elsewhere
What it is
This code identifies sleep-related hypoventilation that occurs because of another underlying condition. Use it when reduced breathing during sleep is documented as secondary, not as a standalone sleep disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe abnormal breathing during sleep with hypoventilation linked to an underlying disease, disorder, or other classified condition.
When to use this code
Use G47.36 when the provider documents sleep-related hypoventilation and clearly links it to another condition classified elsewhere. It may appear in sleep study interpretations, specialist notes, or problem lists when the secondary cause is identified. If the cause is not specified, check documentation before coding.
Do not use for
Do not use this code for primary sleep-disordered breathing without a documented secondary condition. Do not assign it when the chart only says apnea, snoring, or hypoxemia without explicit hypoventilation.
Coding tip
Code the underlying condition first when it is documented, and use G47.36 only for the sleep-related hypoventilation component.