Read Also: Causes Of Muscle Weakness And Fatigue Read Also: Can Thyroid Cause Extreme Fatigue Noise, lighting, or other factors can predispose an individual to developing this disorder. For several of the circadian rhythm sleep disorders, once sleep is initiated, the major sleep episode is normal in duration with normal REM and NREM cycling.Īnother circadian rhythm sleep disorder not due to a known physiological condition is an irregular or unconventional sleepwake pattern that can be the result of social, behavioral, or environmental factors. The wake episodes can occur at undesired times as a result of sleep episodes that occur at inappropriate times, and therefore, the patient may complain of insomnia or excessive sleepiness. The underlying problem in the majority of the circadian rhythm sleep disorders is that the patient cannot sleep when sleep is desired, needed, or expected. Maladaptive behaviors influence the presentation and severity of the circadian rhythm sleep disorders. The major feature of these disorders is a persistent or recurrent misalignment between the patients sleep pattern and the pattern that is desired or regarded as the societal norm. The circadian rhythm sleep disorders have a specific diagnostic category because they share a common underlying chronophysiologic basis. These instructions are present under both categories, subcategories, and complete codes. Before selecting a code, it is advised to read the coding instructions like Code also, Code first, excludes 1 and Exclude 2 diagnosis list.
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