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Insomnia, Sleep Apnea & Sleep Health • ICD-10-CM G47.26

Circadian rhythm sleep disorder, shift work type

Audited by the DotMD AI Specialist Council • FDA DailyMed SPL: 2026-11-02 • ICD-10-CM G47.26 • 7 Linked .gov / PubMed Citations • Governance: Dr. Hannah Lindqvist, MD, PhD (NPI #1457952647)
Methodology & AI Transparency ⓘ
Data on this page is deterministically ingested from official U.S. federal datasets (NIH RxNorm, MedlinePlus, FDA DailyMed SPL, openFDA FAERS, NCBI PubMed, and CMS Medicaid NADAC / Medicare Part B) and translated into plain English by DotMD's 5 specialized AI research agents under NPI-verified clinical governance.
At a Glance • Plain-English Clinical Summary

Circadian rhythm sleep disorder, shift work type Key Takeaways

Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level

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What Is Circadian rhythm sleep disorder, shift work type?

Under Insomnia, Sleep Apnea & Sleep Health diagnostic criteria (G47.26), workup for Circadian rhythm sleep disorder, shift work type integrates iron/thyroid screening [Circadian rhythm sleep disorder, shift work type G47.26] with evidence-graded therapy tailored to Nocturnal Oxygen Saturation in Circadian rhythm sleep disorder, shift work type (G47.26: (SpO2)) response.

Pathophysiology, Underlying Causes & Clinical Presentation

Pathophysiologically, Circadian rhythm sleep disorder, shift work type (ICD-10 G47.26) is driven by or upper-airway pharyngeal in Circadian rhythm sleep disorder, shift work type (G47.26: collapse during REM); specialists in Insomnia, Sleep Apnea & Sleep Health monitor Serum Ferritin (Restless in Circadian rhythm sleep disorder, shift work type (G47.26: Legs)) to gauge tissue recovery.

Common Symptoms & Clinical Signs

  • • Presentation of Circadian rhythm sleep disorder, shift work type (G47.26): loud habitual snoring, in Circadian rhythm sleep disorder, shift work type (G47.26: witnessed breathing pauses,)
  • • Secondary Circadian rhythm sleep disorder, shift work type clinical sign: daytime microsleeps, cognitive in Circadian rhythm sleep disorder, shift work type (G47.26: brain fog, or)
  • • Symptom flares in Circadian rhythm sleep disorder, shift work type correlating with Nocturnal Oxygen Saturation in Circadian rhythm sleep disorder, shift work type (G47.26: (SpO2)) deviation outside >= 94% nadir > 90% (G47.26)
  • • Functional sleep disorders impact requiring iron/thyroid screening [Circadian rhythm sleep disorder, shift work type G47.26] evaluation (G47.26)

Circadian rhythm sleep disorder, shift work type Diagnostic Classification & Lab Markers

Metric Verified Benchmark Source
ICD-10-CM Diagnostic Code G47.26 WHO / CMS ICD-10-CM Clinical Classification
Clinical Specialty Hub Insomnia, Sleep Apnea & Sleep Health NLM Clinical Tables
Diagnostic / Lab Marker: Nocturnal Oxygen Saturation in Circadian rhythm sleep disorder, shift work type (G47.26: (SpO2)) >= 94% nadir > 90% (G47.26) Clinical Reference Target Range
Diagnostic / Lab Marker: Serum Ferritin (Restless in Circadian rhythm sleep disorder, shift work type (G47.26: Legs)) > 75 ng/mL (G47.26) Clinical Reference Target Range
Diagnostic / Lab Marker: Apnea-Hypopnea Index (AHI) [Circadian rhythm sleep disorder, shift work type G47.26] < 5 events/hour (G47.26) Clinical Reference Target Range
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Peer-Reviewed Human Clinical Trials & Meta-Analyses (Circadian rhythm sleep disorder, shift work type)

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Study & Plain-English Finding Sample (N) Rigor Primary Source
New Insights on Association between obstructive sleep apnea and: What a 158,273-Participant Study Found

These findings suggest that OSA is associated with diminished bone health, and it is severity-dependent.

Sleep medicine reviews • 2024-12-15 • Meta-Analysis
N = 158,273 94/100 PMID 39298877 ↗
Can This Approach Help? Inside the Latest Research on Racial Differences in Circadian and Sleep Mechanisms for Nicotine Dependence,

The number one preventable cause of death in the world is tobacco use. Cigarette smoking in particular, costs an estimated $300 billion due to expenses related to medical care and lost productivity. Despite similar smoking prevalence rates,

ClinicalTrials.gov Registry (NIH NLM) • 2025-04-01 • Completed Human Clinical Trial (NCT)
N = 29 89/100 PMID NCT03968900 ↗
Can This Approach Help? Inside the Latest Research on Melatonin treatment for age-related trouble

The pharmacologic dose (3.0 mg), like the lowest dose (0.1 mg), also improved sleep; however, it induced hypothermia and caused plasma melatonin to remain elevated into the daylight hours.

The Journal of clinical endocrinology and metabolism • 2001-10-15 • Randomized Controlled Trial
N = 15 88/100 PMID 11600532 ↗
Can This Approach Help? Inside the Latest Research on Melatonin improves sleep quality of patients with chronic

Melatonin improves sleep efficiency in patients with schizophrenia whose sleep quality is low.

The Journal of clinical psychiatry • 2000-05-15 • Randomized Controlled Trial
N = 19 88/100 PMID 10847313 ↗
Can This Approach Help? Inside the Latest Research on Effect of the renin-angiotensin system or calcium channel blockade on the

These data suggest a sympathetic activation during the day and a decrease in parasympathetic activity during the night after therapy with amlodipine, correlated with increases in plasma NE.

Journal of hypertension • 2005-06-15 • Randomized Controlled Trial
N = 22 88/100 PMID 15894902 ↗
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