ICD-10-CM Diagnosis Code R09.02 - Hypoxemia (original) (raw)

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ICD List 2025-2026 Edition

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Hypoxemia

ICD-10-CM Code:

R09.02

ICD-10 Code for:

Hypoxemia

Is Billable?

Yes - Valid for Submission

Chronic Condition Indicator: [1]

Not chronic

Code Navigator:

R09.02 is a billable diagnosis code used to specify a medical diagnosis of hypoxemia. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

  1. Code Information
  2. Approximate Synonyms
  3. Clinical Classification
  4. Clinical Information
  5. Tabular List of Diseases and Injuries
  6. Index to Diseases and Injuries References
  8. Diagnostic Related Groups Mapping
  9. Convert to ICD-9 Code
  10. Patient Education
  11. Other Codes Used Similar Conditions
  12. Code History

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

CCSR Code: SYM013

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

multiple symptoms associated with reduced oxygen at high altitude.

aryl hydrocarbon receptor nuclear translocator is a basic helix-loop-helix motif containing protein that forms a complex with dioxin receptor. the complex binds xenobiotic regulatory elements and activates transcription of a variety of genes including udp glucuronosyltransferase. ahr nuclear translocator is also a subunit of hypoxia-inducible factor 1.

a condition of decreased oxygen content at the cellular level.

deficient oxygenation of fetal blood.

sub-optimal oxygen levels in the ambient air of living organisms.

a reduction in brain oxygen supply due to anoxemia (a reduced amount of oxygen being carried in the blood by hemoglobin), or to a restriction of the blood supply to the brain, or both. severe hypoxia is referred to as anoxia and is a relatively common cause of injury to the central nervous system. prolonged brain anoxia may lead to brain death or a persistent vegetative state. histologically, this condition is characterized by neuronal loss which is most prominent in the hippocampus; globus pallidus; cerebellum; and inferior olives.

a basic helix-loop-helix transcription factor that plays a role in apoptosis. it is composed of two subunits: aryl hydrocarbon receptor nuclear translocator and hypoxia-inducible factor 1, alpha subunit.

hypoxia-inducible factor 1, alpha subunit is a basic helix-loop-helix transcription factor that is regulated by oxygen availability and is targeted for degradation by vhl tumor suppressor protein.

dioxygenase enzymes that specifically hydroxylate a proline residue on the hypoxia-inducible factor 1, alpha subunit. they are oxygen-dependent enzymes that play an important role in mediating cellular adaptive responses to hypoxia.

a disorder characterized by a reduction of oxygen in the blood combined with reduced blood flow (ischemia) to the brain from a localized obstruction of a cerebral artery or from systemic hypoperfusion. prolonged hypoxia-ischemia is associated with ischemic attack, transient; brain infarction; brain edema; coma; and other conditions.

hypoxic conditions in tumor cells due to the tumor outgrowing its blood supply. it is associated with increased metastasis and resistance to radiotherapy and drug therapy.

a vertical distance measured from a known level on the surface of a planet or other celestial body.

blood of the fetus. exchange of nutrients and waste between the fetal and maternal blood occurs via the placenta. the cord blood is blood contained in the umbilical vessels (umbilical cord) at the time of delivery.

an element with atomic symbol o, atomic number 8, and atomic weight [15.99903; 15.99977]. it is the most abundant element on earth and essential for respiration.

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

References found for this diagnosis code in the External Cause of Injuries Index:

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

ICD-9-CM: 799.02

This is a direct match with no additional mapping qualifiers. The absence of a flag generally means the mapping is considered exact or precise. In other words, the ICD-10 code maps cleanly to the ICD-9 code without qualification, approximation, or needing multiple codes.

Lung Diseases

When you breathe, your lungs take in oxygen from the air and deliver it to the bloodstream. The cells in your body need oxygen to work and grow. During a normal day, you breathe nearly 25,000 times. People with lung disease have difficulty breathing. Millions of people in the U.S. have lung disease. If all types of lung disease are lumped together, it is the number three killer in the United States.

The term lung disease refers to many disorders affecting the lungs, such as asthma, COPD, infections like influenza, pneumonia and tuberculosis, lung cancer, and many other breathing problems. Some lung diseases can lead to respiratory failure.

Dept. of Health and Human Services Office on Women's Health

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