T61.1
Scombroid fish poisoning
Clinical Classification Guidelines
Inclusion Terms
- Histamine-like syndrome
Medical Intelligence & Overview
Scombroid fish poisoning, classified under ICD-10 code T61.1, is a type of food poisoning caused by consuming fish that contains high levels of histamine. This condition often occurs after eating improperly stored or handled fish, especially species like tuna, mackerel, sardines, and mahi-mahi. The poisoning results from a histamine-like syndrome, which mimics allergic reactions, leading to a range of uncomfortable symptoms. While usually not life-threatening, scombroid poisoning can cause significant discomfort and requires awareness for prompt recognition and management.
Causes & Symptoms
Clinical Causes: Consumption of fish that has not been stored at proper temperatures after catching. Fish species prone to scombroid poisoning, such as tuna, mackerel, sardines, and mahi-mahi. Inadequate refrigeration or delayed cooling after fishing increases bacteria activity that converts histidine to histamine. Poor fish handling practices during processing or at retail outlets.
Key Symptoms: Facial flushing and redness Headache and dizziness Gastrointestinal issues like nausea, vomiting, and diarrhea Palpitations or rapid heartbeat Burning or tingling sensation in the mouth or throat Swelling of the face, lips, or tongue in severe cases Skin rash or hives
Diagnostic & Treatment
Diagnosis Path: Diagnosis of scombroid fish poisoning relies on clinical suspicion based on recent fish consumption and symptom presentation. Laboratory testing can detect elevated histamine levels in residual fish samples or sometimes in the patient's blood. Medical history, including dietary details, and ruling out other causes of allergic reactions or food poisoning, assists in confirming the diagnosis. In some cases, identifying the specific fish species consumed helps correlate the symptoms with known scombroid poisoning risks.
Treatment Protocols: Administration of antihistamines to reduce allergic-like symptoms Use of pain relievers for headache and muscle discomfort Hydration with fluids to prevent dehydration from gastrointestinal symptoms Observation in severe cases, especially if swelling affects breathing or cardiovascular stability Avoidance of further fish consumption until diagnosis is confirmed and symptoms resolve
Clinical Advice & FAQs
Billing Guidance
Is T61.1 a billable ICD-10 code?
Yes, T61.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report T61.1?
Clinical documentation must specify the nature of Scombroid fish poisoning and any associated comorbidities for accurate reporting.
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