ICD-10: E20

Hypoparathyroidism

Additional Information

Clinical Information

Hypoparathyroidism, classified under ICD-10 code E20, is a condition characterized by insufficient production of parathyroid hormone (PTH), leading to low levels of calcium in the blood (hypocalcemia) and elevated levels of phosphate (hyperphosphatemia). Understanding the clinical presentation, signs, symptoms, and patient characteristics associated with this condition is crucial for effective diagnosis and management.

Clinical Presentation

Signs and Symptoms

The clinical presentation of hypoparathyroidism can vary significantly among patients, but common signs and symptoms include:

  • Neuromuscular Symptoms: Patients often experience muscle cramps, spasms, or tetany, which is a condition characterized by involuntary muscle contractions. These symptoms are typically more pronounced in the hands and feet and can be triggered by stress or physical activity[4][6].

  • Paresthesia: Tingling sensations, particularly around the mouth, fingertips, and toes, are common. This symptom is often an early indicator of hypocalcemia[6].

  • Seizures: In severe cases, patients may experience seizures due to significant drops in calcium levels[6].

  • Cardiovascular Symptoms: Hypoparathyroidism can lead to prolonged QT intervals on an electrocardiogram (ECG), which increases the risk of arrhythmias. Patients may also experience palpitations or other cardiovascular irregularities[6].

  • Psychiatric Symptoms: Some patients report mood changes, anxiety, or depression, which can be attributed to the physiological effects of low calcium levels on the nervous system[6].

  • Dental Issues: Dental enamel hypoplasia and other dental abnormalities may occur, particularly in patients with congenital forms of hypoparathyroidism[4].

Physical Examination Findings

During a physical examination, healthcare providers may observe:

  • Chvostek's Sign: Tapping on the facial nerve may elicit twitching of the facial muscles, indicating neuromuscular excitability due to low calcium levels[6].

  • Trousseau's Sign: Inflating a blood pressure cuff can induce carpopedal spasm, further indicating hypocalcemia[6].

Patient Characteristics

Demographics

Hypoparathyroidism can affect individuals of all ages, but certain characteristics are more prevalent in specific populations:

  • Age: The condition can be congenital or acquired, with acquired forms often resulting from surgical removal of the parathyroid glands or autoimmune diseases. Congenital hypoparathyroidism is more commonly diagnosed in children[4][5].

  • Gender: There is a higher prevalence of autoimmune hypoparathyroidism in females, particularly those with other autoimmune conditions[4][5].

Etiology

The causes of hypoparathyroidism can be classified into several categories:

  • Surgical: Accidental removal or damage to the parathyroid glands during thyroid surgery is a common cause of acquired hypoparathyroidism[4].

  • Autoimmune: Autoimmune hypoparathyroidism can occur as part of polyglandular autoimmune syndrome, where the immune system mistakenly attacks the parathyroid glands[4][5].

  • Genetic: Genetic mutations can lead to congenital forms of hypoparathyroidism, such as DiGeorge syndrome, which is characterized by developmental defects in the parathyroid glands[4][5].

Comorbidities

Patients with hypoparathyroidism may also present with other health conditions, including:

  • Autoimmune Disorders: Many patients with autoimmune hypoparathyroidism have other autoimmune conditions, such as autoimmune thyroid disease or adrenal insufficiency[4][5].

  • Chronic Kidney Disease: Patients with chronic kidney disease may develop secondary hyperparathyroidism, which can complicate the clinical picture[4].

Conclusion

Hypoparathyroidism, classified under ICD-10 code E20, presents with a range of clinical signs and symptoms primarily related to hypocalcemia. The condition can significantly impact a patient's quality of life, necessitating careful management and monitoring. Understanding the diverse clinical presentations and patient characteristics associated with hypoparathyroidism is essential for healthcare providers to ensure accurate diagnosis and effective treatment strategies. Regular follow-up and patient education are critical components of managing this condition effectively.

Approximate Synonyms

Hypoparathyroidism, classified under ICD-10 code E20, is a condition characterized by insufficient production of parathyroid hormone (PTH), leading to low levels of calcium in the blood. Understanding the alternative names and related terms for this condition can enhance clarity in medical documentation and communication. Below is a detailed overview of the alternative names and related terms associated with ICD-10 code E20.

Alternative Names for Hypoparathyroidism

  1. Hypoparathyroidism: This term is often used interchangeably with hypoparathyroidism and refers to the same condition of reduced parathyroid hormone levels.

  2. Secondary Hypoparathyroidism: This term describes a form of hypoparathyroidism that occurs as a result of another condition, such as chronic kidney disease, which affects calcium and phosphate metabolism.

  3. Pseudohypoparathyroidism: Although not a direct synonym, this term refers to a genetic disorder that mimics the symptoms of hypoparathyroidism due to the body's resistance to PTH, rather than a deficiency of the hormone itself.

  4. Post-surgical Hypoparathyroidism: This term is used when hypoparathyroidism occurs following surgical removal of the parathyroid glands, often during thyroid surgery.

  5. Idiopathic Hypoparathyroidism: This refers to cases where the cause of hypoparathyroidism is unknown, distinguishing it from cases with identifiable causes.

  1. Parathyroid Hormone (PTH): The hormone that is deficient in hypoparathyroidism, crucial for regulating calcium levels in the blood.

  2. Calcium Metabolism Disorders: A broader category that includes conditions affecting calcium levels, of which hypoparathyroidism is a specific example.

  3. Hypocalcemia: A condition characterized by low calcium levels in the blood, which is a direct consequence of hypoparathyroidism.

  4. Vitamin D Deficiency: While not synonymous, vitamin D plays a critical role in calcium absorption, and its deficiency can exacerbate the symptoms of hypoparathyroidism.

  5. Endocrine Disorders: Hypoparathyroidism falls under this category, which encompasses various conditions affecting hormone-producing glands.

  6. E20.0 - E20.9: These codes represent the range of hypoparathyroidism classifications in the ICD-10 system, with E20.0 indicating "Hypoparathyroidism, unspecified" and E20.9 specifically denoting "Hypoparathyroidism, unspecified" as well.

Conclusion

Understanding the alternative names and related terms for ICD-10 code E20: Hypoparathyroidism is essential for accurate diagnosis, treatment, and communication among healthcare professionals. This knowledge not only aids in clinical practice but also enhances patient education regarding their condition. If you have further questions or need more specific information about hypoparathyroidism, feel free to ask!

Treatment Guidelines

Hypoparathyroidism, classified under ICD-10 code E20, is a condition characterized by insufficient production of parathyroid hormone (PTH), leading to low levels of calcium in the blood (hypocalcemia) and high levels of phosphate (hyperphosphatemia). The management of hypoparathyroidism focuses on alleviating symptoms, correcting electrolyte imbalances, and preventing complications. Here’s a detailed overview of standard treatment approaches for this condition.

Treatment Goals

The primary goals in managing hypoparathyroidism include:

  • Restoration of normal calcium levels: This is crucial to prevent symptoms such as muscle cramps, tetany, and seizures.
  • Management of phosphate levels: Elevated phosphate can lead to complications such as calcification of soft tissues.
  • Improvement of quality of life: Patients often experience a low health-related quality of life due to chronic symptoms associated with hypoparathyroidism[3][7].

Standard Treatment Approaches

1. Calcium Supplementation

Calcium supplements are the cornerstone of treatment for hypoparathyroidism. Patients typically require oral calcium carbonate or calcium citrate to maintain serum calcium levels within the normal range. The dosage is individualized based on the severity of hypocalcemia and the patient's response to treatment. Regular monitoring of serum calcium levels is essential to adjust the dosage accordingly[1][5].

2. Active Vitamin D Metabolites

In addition to calcium supplementation, active forms of vitamin D, such as calcitriol (1,25-dihydroxyvitamin D), are often prescribed. Calcitriol enhances intestinal absorption of calcium and helps to mobilize calcium from the bones. This is particularly important in patients with hypoparathyroidism, as they may have impaired conversion of vitamin D to its active form due to low PTH levels[1][5].

3. TransCon PTH Therapy

TransCon PTH (transcendent parathyroid hormone) is a newer treatment option that has shown promise in clinical trials. It is a long-acting formulation of PTH designed to provide a more physiological replacement of the hormone. This therapy aims to improve calcium levels and reduce the need for high doses of calcium and vitamin D supplements. It represents a significant advancement in the management of hypoparathyroidism, particularly for patients who do not achieve adequate control with conventional therapies[5][6].

4. Monitoring and Adjustments

Regular follow-up appointments are crucial for monitoring serum calcium and phosphate levels, as well as assessing the patient's symptoms and overall health-related quality of life. Adjustments to the treatment regimen may be necessary based on these evaluations. Patients should also be educated about the signs of hypocalcemia and hypercalcemia, enabling them to seek timely medical attention if symptoms arise[3][7].

5. Management of Complications

Patients with chronic hypoparathyroidism may develop complications such as kidney stones or calcification of soft tissues. Preventive measures, including adequate hydration and dietary modifications, may be recommended to mitigate these risks. In some cases, additional medications may be required to manage these complications effectively[1][4].

Conclusion

The management of hypoparathyroidism (ICD-10 code E20) involves a multifaceted approach that includes calcium and vitamin D supplementation, potential use of novel therapies like TransCon PTH, and regular monitoring to ensure optimal health outcomes. As research continues to evolve, new treatment modalities may further enhance the quality of life for individuals affected by this condition. Regular communication with healthcare providers is essential for tailoring treatment plans to meet individual patient needs and addressing any emerging complications.

Description

Hypoparathyroidism is a condition characterized by insufficient production of parathyroid hormone (PTH), which plays a crucial role in regulating calcium and phosphate levels in the body. The ICD-10 code for hypoparathyroidism is E20. Below is a detailed clinical description and relevant information regarding this condition.

Clinical Description of Hypoparathyroidism

Definition

Hypoparathyroidism occurs when the parathyroid glands, located in the neck, produce inadequate amounts of PTH. This hormone is essential for maintaining calcium homeostasis, and its deficiency leads to low serum calcium levels (hypocalcemia) and elevated phosphate levels (hyperphosphatemia) in the blood.

Etiology

The causes of hypoparathyroidism can be classified into several categories:

  1. Surgical Removal: The most common cause is accidental damage or removal of the parathyroid glands during thyroid surgery or neck surgery.
  2. Autoimmune Disorders: Autoimmune conditions can lead to the destruction of parathyroid tissue.
  3. Genetic Disorders: Conditions such as DiGeorge syndrome and familial isolated hypoparathyroidism can result in congenital hypoparathyroidism.
  4. Magnesium Deficiency: Low magnesium levels can impair PTH secretion, leading to functional hypoparathyroidism.
  5. Radiation Therapy: Radiation treatment to the neck can damage the parathyroid glands.

Symptoms

Patients with hypoparathyroidism may experience a range of symptoms due to low calcium levels, including:

  • Neuromuscular Symptoms: Muscle cramps, spasms (tetany), and tingling sensations (paresthesia) in the fingers and around the mouth.
  • Cognitive Symptoms: Anxiety, depression, and confusion can occur due to calcium's role in neurotransmission.
  • Cardiovascular Symptoms: Prolonged hypocalcemia can lead to cardiac arrhythmias.
  • Dermatological Symptoms: Dry skin, brittle nails, and hair loss may also be observed.

Diagnosis

Diagnosis of hypoparathyroidism typically involves:

  • Serum Calcium Levels: Low serum calcium levels confirm hypocalcemia.
  • Serum Phosphate Levels: Elevated phosphate levels are indicative of the condition.
  • PTH Levels: Low or undetectable PTH levels confirm the diagnosis of hypoparathyroidism.
  • Magnesium Levels: Assessing magnesium levels is important, as deficiency can mimic or exacerbate hypoparathyroidism.

Treatment

Management of hypoparathyroidism focuses on correcting calcium and phosphate imbalances:

  • Calcium Supplements: Oral calcium carbonate or calcium citrate is commonly prescribed to maintain normal calcium levels.
  • Vitamin D Supplements: Active forms of vitamin D, such as calcitriol, are often necessary to enhance calcium absorption from the gut.
  • Monitoring: Regular monitoring of serum calcium and phosphate levels is essential to adjust treatment as needed.

ICD-10 Code Details

The ICD-10 code E20 encompasses various forms of hypoparathyroidism, including:

  • E20.0: Autosomal dominant hypocalcemia
  • E20.1: Idiopathic hypoparathyroidism
  • E20.8: Other specified hypoparathyroidism
  • E20.9: Hypoparathyroidism, unspecified

These codes help in the classification and billing of the condition for healthcare providers and insurers, ensuring accurate medical records and treatment plans.

Conclusion

Hypoparathyroidism is a significant endocrine disorder that requires careful diagnosis and management to prevent complications associated with hypocalcemia. Understanding the clinical features, causes, and treatment options is essential for healthcare providers to effectively support patients with this condition. Regular follow-up and monitoring are crucial to ensure optimal management and quality of life for affected individuals.

Diagnostic Criteria

Hypoparathyroidism is a condition characterized by insufficient production of parathyroid hormone (PTH), leading to low levels of calcium in the blood and various clinical manifestations. The International Classification of Diseases, Tenth Revision (ICD-10) provides specific codes for this condition, with E20 being the primary code for hypoparathyroidism. Here’s a detailed overview of the criteria used for diagnosing hypoparathyroidism, particularly in relation to the ICD-10 code E20.

Diagnostic Criteria for Hypoparathyroidism

1. Clinical Symptoms

The diagnosis of hypoparathyroidism often begins with the identification of clinical symptoms, which may include:
- Muscle cramps or spasms: These can occur due to low calcium levels (hypocalcemia).
- Tingling or numbness: Patients may experience paresthesia, particularly around the mouth and in the extremities.
- Seizures: Severe hypocalcemia can lead to neurological symptoms, including seizures.
- Fatigue and weakness: Generalized weakness and fatigue are common complaints.
- Mood changes: Patients may exhibit anxiety, depression, or irritability.

2. Laboratory Tests

Confirmatory laboratory tests are essential for diagnosing hypoparathyroidism:
- Serum Calcium Levels: A low serum calcium level (hypocalcemia) is a hallmark of the condition. Normal total calcium levels range from 8.5 to 10.2 mg/dL; levels below this range may indicate hypoparathyroidism.
- Serum Parathyroid Hormone (PTH) Levels: In hypoparathyroidism, PTH levels are typically low or inappropriately normal despite low calcium levels. This is a critical diagnostic criterion.
- Phosphate Levels: Elevated serum phosphate levels (hyperphosphatemia) may also be present, as PTH normally helps regulate phosphate levels.

3. Exclusion of Other Conditions

It is important to rule out other conditions that can cause similar symptoms or laboratory findings:
- Vitamin D Deficiency: This can lead to secondary hyperparathyroidism, which must be differentiated from primary hypoparathyroidism.
- Renal Disease: Chronic kidney disease can affect calcium and phosphate metabolism, mimicking hypoparathyroidism.
- Autoimmune Conditions: Conditions such as autoimmune polyglandular syndrome may also present with hypoparathyroidism.

4. Imaging Studies

While not routinely required for diagnosis, imaging studies may be used to assess the parathyroid glands:
- Ultrasound: This can help visualize the parathyroid glands and identify any structural abnormalities.
- CT or MRI: These imaging modalities may be used in specific cases to evaluate for parathyroid adenomas or other abnormalities.

5. Family and Medical History

A thorough medical history is crucial, as hypoparathyroidism can be hereditary. Family history of endocrine disorders or previous neck surgery (which may damage the parathyroid glands) should be documented.

ICD-10 Code E20: Hypoparathyroidism

The ICD-10 code E20 specifically refers to hypoparathyroidism. It is important for healthcare providers to accurately document the diagnosis using this code, as it impacts treatment plans, insurance reimbursements, and epidemiological data collection. The code E20 can be further specified based on the underlying cause, such as:
- E20.0: Idiopathic hypoparathyroidism
- E20.1: Post-surgical hypoparathyroidism
- E20.9: Hypoparathyroidism, unspecified

Conclusion

Diagnosing hypoparathyroidism involves a combination of clinical evaluation, laboratory testing, and exclusion of other potential causes of hypocalcemia. The ICD-10 code E20 serves as a standardized classification for this condition, facilitating accurate diagnosis and treatment. Understanding these criteria is essential for healthcare professionals in managing patients with hypoparathyroidism effectively.

Related Information

Clinical Information

  • Neuromuscular symptoms common in patients
  • Muscle cramps, spasms or tetany typical
  • Tingling sensations (paresthesia) frequent
  • Seizures occur in severe cases
  • Cardiovascular irregularities possible
  • Prolonged QT intervals on ECG
  • Palpitations can occur
  • Mood changes, anxiety or depression possible
  • Dental enamel hypoplasia a risk factor
  • Chvostek's sign indicates low calcium levels
  • Trousseau's sign confirms hypocalcemia
  • Acquired forms often result from surgery
  • Autoimmune diseases cause hypoparathyroidism
  • Congenital form common in children
  • Higher prevalence in females with autoimmune conditions

Approximate Synonyms

  • Hypoparathyroidism
  • Secondary Hypoparathyroidism
  • Pseudohypoparathyroidism
  • Post-surgical Hypoparathyroidism
  • Idiopathic Hypoparathyroidism

Treatment Guidelines

  • Restore normal calcium levels
  • Manage phosphate levels carefully
  • Monitor serum calcium levels regularly
  • Use calcium supplements as needed
  • Prescribe active vitamin D metabolites
  • Consider TransCon PTH therapy options
  • Adjust treatment based on patient response

Description

Diagnostic Criteria

Coding Guidelines

Excludes 1

  • transitory neonatal hypoparathyroidism (P71.4)
  • tetany NOS (R29.0)
  • postprocedural hypoparathyroidism (E89.2)
  • Di George's syndrome (D82.1)

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