Nocturnal Hypoxia ICD-10-CM Codes

Uncover Nocturnal Hypoxia ICD-10-CM codes for 2023. Our guide aids in accurate coding and efficient medical billing.

By Bernard Ramirez on Aug 8, 2025.

Fact Checked by RJ Gumban.

What ICD-10 Codes Are Used for Nocturnal Hypoxia?

Nocturnal Hypoxia is a condition where oxygen levels drop significantly during sleep. The following are standard Nocturnal Hypoxia ICD codes:

G47.33: Obstructive sleep apnea (adult) (pediatric). This code is used when a patient is diagnosed with obstructive sleep apnea, which may cause nocturnal hypoxia.
G47.30: Sleep apnea, unspecified. This code is used when a patient has sleep apnea, which isn't specified as obstructive, central, or mixed and could cause nocturnal hypoxia.
E27.3: Other adrenal hypofunction. This code can be used with others to describe conditions leading to nocturnal hypoxia.
I27.20: Pulmonary hypertension, unspecified. Hypoxia can result from pulmonary hypertension, and this code represents that condition.
I27.0: Primary pulmonary hypertension. This is a more specific code for primary pulmonary hypertension, a potential cause of hypoxia.

Here is an overview of whether the above-mentioned ICD codes are billable:

G47.33: Yes, this code is billable and usually used when a patient is diagnosed with obstructive sleep apnea.
G47.30: Yes, this code is billable. It's used when a patient has sleep apnea not specified as obstructive, central, or mixed.
E27.3: Yes, this code is billable. It describes other adrenal hypofunctions, which can be related to nocturnal hypoxia.
I27.20: Yes, this code is billable. It represents unspecified pulmonary hypertension, which can lead to hypoxia.
I27.0: Yes, this code is billable. It's used for a more specific condition, primary pulmonary hypertension.

Nocturnal Hypoxia is a severe medical condition where a patient's oxygen levels drop during sleep. This can lead to several health issues:

It often occurs due to sleep disorders like obstructive sleep apnea.
Reduced oxygen can put significant strain on the heart and other organs.
Symptoms often include restless sleep, snoring, morning headaches, and daytime sleepiness.
Treatment usually involves managing the underlying cause, such as using a CPAP machine for sleep apnea.

Symptoms often include restlessness during sleep, loud snoring, headaches upon waking up, and excessive sleepiness during the day.

Treatment involves managing the underlying cause, like using a continuous positive airway pressure (CPAP) machine for obstructive sleep apnea.

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If left untreated, it can lead to heart-related problems, high blood pressure, and even stroke risk.

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