ICD-10: E05.90

The ICD-10 code E05.90 refers to "Thyrotoxicosis, unspecified without thyrotoxic crisis or storm." Here are some alternative names and related terms associated with this condition:

• Thyrotoxicosis: This is the general term for a condition resulting from excessive thyroid hormones in the body.
• Hyperthyroidism: While not synonymous, hyperthyroidism is a common cause of thyrotoxicosis and refers to an overactive thyroid gland.
• Thyroid storm: This term is related but specifically refers to a severe and life-threatening exacerbation of hyperthyroidism, which is not applicable in the case of E05.90 as it specifies "without thyrotoxic crisis or storm."
• Unspecified thyrotoxicosis: This term emphasizes that the specific cause of the thyrotoxicosis is not identified.
• Endocrine disorders: Thyrotoxicosis falls under this broader category of diseases related to hormone imbalances.

These terms help in understanding the condition and its classification within medical terminology, particularly in the context of endocrine, nutritional, and metabolic diseases [10][12].

The ICD-10 code E05.90 is used to classify "Thyrotoxicosis, unspecified without thyrotoxic crisis or storm." The criteria for diagnosing this condition typically include the following:

• Clinical Symptoms: Patients may present with symptoms commonly associated with hyperthyroidism, such as weight loss, increased appetite, nervousness, tremors, heat intolerance, and palpitations. However, the specific symptoms can vary widely among individuals.

• Thyroid Function Tests: Diagnosis often involves laboratory tests that measure levels of thyroid hormones (such as T3 and T4) and Thyroid-Stimulating Hormone (TSH). In thyrotoxicosis, T3 and T4 levels are usually elevated, while TSH levels are suppressed.

• Exclusion of Thyrotoxic Crisis: The diagnosis specifically excludes cases of thyrotoxic crisis or storm, which are severe and life-threatening exacerbations of hyperthyroidism. This means that the patient does not exhibit the extreme symptoms or complications associated with a thyrotoxic crisis.

• Medical History and Physical Examination: A thorough medical history and physical examination are essential to rule out other causes of the symptoms and to confirm the diagnosis of thyrotoxicosis.

• Imaging Studies: In some cases, imaging studies such as a thyroid scan may be performed to assess the structure and function of the thyroid gland, although this is not always necessary for the diagnosis of unspecified thyrotoxicosis.

These criteria help healthcare providers determine the appropriate diagnosis and subsequent management for patients suspected of having thyrotoxicosis without a crisis or storm [10][11][12].