1F60: Angiostrongyliasis

ICD-11 code 1F60 refers to Angiostrongyliasis, a parasitic disease caused by roundworms of the genus Angiostrongylus. This condition primarily affects the central nervous system, leading to symptoms such as headaches, stiffness of the neck, and neurological disturbances. Angiostrongyliasis is often contracted through the consumption of raw or undercooked mollusks infected with Angiostrongylus larvae.

The disease is commonly found in tropical and subtropical regions, particularly in Southeast Asia, the Pacific Islands, and parts of Latin America. Infections may occur in humans when they ingest the larvae present in contaminated food or water sources. Once ingested, the larvae migrate to the central nervous system, causing inflammation and potentially severe neurological complications.

Although rare, cases of Angiostrongyliasis have been reported in various parts of the world, including the United States. The diagnosis of this parasitic infection is often challenging due to its nonspecific symptoms and the need for specialized testing. Treatment options for Angiostrongyliasis typically involve antiparasitic medications and supportive care to manage the neurological manifestations of the disease.

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#️⃣  Coding Considerations

The SNOMED CT code equivalent to the ICD-11 code 1F60 (Angiostrongyliasis) is 28940007. This code in the SNOMED CT terminology is used to categorize cases of Angiostrongyliasis, a parasitic infection caused by the roundworm Angiostrongylus cantonensis. The code is a unique identifier that allows healthcare professionals to accurately document and track cases of this specific disease within electronic health records and databases. By using this code, healthcare providers can effectively communicate and share information about Angiostrongyliasis with accuracy and precision. The SNOMED CT code 28940007 enables consistency in data collection and analysis, ultimately leading to better healthcare outcomes for patients affected by this parasitic infection.

In the United States, ICD-11 is not yet in use. The U.S. is currently using ICD-10-CM (Clinical Modification), which has been adapted from the WHO’s ICD-10 to better suit the American healthcare system’s requirements for billing and clinical purposes. The Centers for Medicare and Medicaid Services (CMS) have not yet set a specific date for the transition to ICD-11.

The situation in Europe varies by country. Some European nations are considering the adoption of ICD-11 or are in various stages of planning and pilot studies. However, as with the U.S., full implementation may take several years due to similar requirements for system updates and training.

🔎  Symptoms

Patients with 1F60 (Angiostrongyliasis) typically present with a wide range of symptoms, which can vary depending on the stage of the infection. During the early stages, individuals may experience gastrointestinal issues such as abdominal pain, nausea, and vomiting. As the infection progresses, neurological symptoms may develop, including headache, neck stiffness, and altered mental status.

One of the hallmark symptoms of angiostrongyliasis is eosinophilic meningitis, which is characterized by inflammation of the meninges and an elevated number of eosinophils in the cerebrospinal fluid. This can lead to symptoms such as fever, severe headache, and photophobia. In more severe cases, patients may also experience neurological deficits, seizures, and paralysis.

In some cases, angiostrongyliasis can lead to ocular manifestations, such as blurred vision, eye pain, and visual disturbances. These symptoms are often a result of the migration of the parasite to the eye and can cause irreversible damage if not promptly treated. Other less common symptoms of the infection may include cough, chest pain, and shortness of breath, which can occur if the parasite migrates to the lungs.

🩺  Diagnosis

Diagnosis of Angiostrongyliasis can be challenging due to its nonspecific symptoms and the lack of reliable diagnostic tests. The most common diagnostic method is examining cerebrospinal fluid for the presence of Angiostrongylus larvae. This can be done through a lumbar puncture, where fluid is collected from the spinal cord and tested for the presence of larvae.

In some cases, imaging studies such as MRI or CT scans may be used to detect abnormalities in the brain or spinal cord that are suggestive of Angiostrongyliasis. However, these imaging techniques are not specific to the disease and may only provide indirect evidence of infection. Blood tests are also sometimes used to look for signs of infection, such as elevated eosinophils or antibodies against Angiostrongylus.

Another diagnostic method for Angiostrongyliasis is serological testing, which involves looking for specific antibodies in the blood that indicate past or current infection. However, serological tests may not always be reliable and may produce false-negative results, especially in the early stages of infection. Consequently, a combination of different diagnostic methods, including clinical evaluation, cerebrospinal fluid analysis, imaging studies, and serological testing, is often used to confirm a diagnosis of Angiostrongyliasis.

💊  Treatment & Recovery

Treatment for Angiostrongyliasis involves both addressing the symptoms caused by the parasite and eliminating the worms from the body. Mild cases of the disease may not require any specific treatment, as symptoms may resolve on their own within a few weeks to months. However, in more severe cases where symptoms are debilitating, medical intervention may be necessary.

In cases where the infection leads to meningitis or encephalitis, patients may require hospitalization for monitoring and supportive care. This can include the use of corticosteroids to reduce inflammation in the brain and alleviate symptoms. In some cases, anti-parasitic medications may be prescribed to kill the worms and treat the infection.

Recovery from Angiostrongyliasis can vary depending on the severity of the infection and the individual’s overall health. In mild cases, symptoms may gradually improve over time with rest and supportive care. Patients with more severe infections may require a longer recovery period and ongoing medical treatment.

In some cases, complications such as permanent neurological damage or disability may occur as a result of Angiostrongyliasis. It is important for patients to follow up with their healthcare providers regularly to monitor their recovery progress and address any lingering symptoms. Additionally, patients may benefit from physical therapy or other supportive services to help them regain strength and function following their illness.

🌎  Prevalence & Risk

In the United States, Angiostrongyliasis is considered a rare disease with sporadic cases reported mainly in the southern regions. Due to the low prevalence of the parasite responsible for the infection, Angiostrongyliasis is not commonly encountered in clinical practice in the US.

In Europe, cases of Angiostrongyliasis are limited and mainly associated with travel to endemic regions such as Southeast Asia. The lack of suitable intermediate hosts for the parasite in European countries restricts the transmission of Angiostrongyliasis, contributing to its low prevalence in the region.

In Asia, Angiostrongyliasis is more prevalent, particularly in tropical and subtropical areas where the intermediate hosts of the parasite are abundant. Countries such as Thailand, China, and Taiwan have reported a higher number of cases, with increasing awareness and surveillance efforts helping to better understand the prevalence and distribution of the disease in the region.

In Africa, Angiostrongyliasis has been reported in a few countries, primarily in East Africa. Limited research and surveillance data make it difficult to determine the exact prevalence of the disease in the continent, but cases have been documented in countries such as Kenya and Tanzania.

😷  Prevention

To prevent angiostrongyliasis, it is important to avoid consuming raw or undercooked snails and slugs, which can harbor the parasitic larvae responsible for the disease. Additionally, individuals should wash fruits and vegetables thoroughly before consumption, as these can also serve as potential sources of infection if contaminated with the parasite.

Furthermore, it is advisable to practice good hygiene, such as washing hands thoroughly after handling soil or potentially contaminated materials, to reduce the risk of ingesting the parasite inadvertently. By taking these simple precautions, individuals can greatly reduce their risk of contracting angiostrongyliasis and minimize the spread of the disease.

Overall, prevention of angiostrongyliasis involves being vigilant about food safety practices and maintaining good hygiene habits to minimize the risk of exposure to the parasite. By following these guidelines, individuals can protect themselves and others from this potentially serious and debilitating disease.

Angiostrongyliasis, also known as rat lungworm disease, is caused by the parasitic roundworm Angiostrongylus cantonensis. While there are no specific ICD-10 codes for angiostrongyliasis, there are several diseases that share similar symptoms and may be confused with angiostrongyliasis. One such disease is neurocysticercosis, which is caused by the larval form of the pork tapeworm Taenia solium. Neurocysticercosis can present with symptoms such as headache, seizures, and cognitive deficits, which are also common in angiostrongyliasis. The ICD-10 code for neurocysticercosis is B69.

Another disease that may be mistaken for angiostrongyliasis is eosinophilic meningitis, which is characterized by inflammation of the meninges and a high percentage of eosinophils in the cerebrospinal fluid. Eosinophilic meningitis can be caused by various parasites, including Angiostrongylus cantonensis. The ICD-10 code for eosinophilic meningitis is G03.0. Additionally, Lyme neuroborreliosis, caused by the bacterium Borrelia burgdorferi, can present with neurological symptoms similar to those seen in angiostrongyliasis. The ICD-10 code for Lyme neuroborreliosis is A69.2.

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