I16.1 Hypertensive emergency

ICD10CM code

#### Name of the Condition
- **Hypertensive Emergency** (also known as a Hypertensive Crisis with organ damage)

#### Summary
- Hypertensive emergency is a severe increase in blood pressure (BP) that can lead to damage in one or more of the body's organ systems if left untreated. It's a critical situation requiring immediate medical intervention to prevent life-threatening complications.

#### Causes
- Hypertensive emergency is usually triggered by poorly controlled high blood pressure. It can also be caused by skipping prescribed medications, substance abuse (such as cocaine or amphetamines), endocrine disorders, kidney disease, and certain medication interactions.

#### Risk Factors
- Uncontrolled hypertension
- Existing cardiovascular disease
- Diabetes
- Smoking
- Obesity
- Substance abuse, particularly stimulant drugs
- African American ethnicity

#### Symptoms
- Severe headache
- Shortness of breath
- Chest pain
- Nausea or vomiting
- Confusion or change in mental status
- Blurred vision

#### Diagnosis
- Immediate blood pressure measurement (often BP is >180/120 mmHg)
- Medical history and physical examination
- Kidney function tests, urinalysis, blood tests
- Electrocardiogram (ECG)
- Imaging tests if organ damage is suspected

#### Treatment Options
- Intravenous antihypertensives: To rapidly reduce blood pressure (e.g., nitroprusside, labetalol).
- Continuous blood pressure monitoring: To ensure BP is reduced safely.
- Supplemental oxygen and treatment of specific complications related to organ damage.

#### Prognosis and Follow-Up
- The outcome largely depends on the rapidity and extent of BP control and the presence of organ damage.
- Regular follow-up with healthcare providers is critical to manage BP and prevent future emergencies.

#### Complications
- Stroke
- Heart attack
- Pulmonary edema
- Renal failure
- Aortic dissection
- Retinopathy

#### Lifestyle & Prevention
- Regularly monitoring blood pressure
- Adhering to prescribed anti-hypertensive medications
- Maintaining a healthy diet low in salt and fats
- Regular physical activity
- Avoiding smoking and recreational drug use
- Limiting alcohol consumption

#### When to Seek Professional Help
- Immediate medical attention is necessary if experiencing symptoms of hypertensive emergency, such as severe headache, chest pain, or sudden vision changes.

#### Additional Resources
- American Heart Association [www.heart.org](https://www.heart.org)
- National Institute of Health, High Blood Pressure Education Program

#### Tips for Medical Coders
- Ensure correct documentation of acute organ damage to differentiate I16.1 from other hypertensive conditions.
- Verify the presence of end-organ damage and differentiate from hypertensive urgency.
- Be cautious with coding, as miscoding can affect treatment strategy and patient outcome documentation.

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