487.1
ICD-9-CMThis code signifies a diagnosis of influenza that presents with additional respiratory symptoms beyond typical flu manifestations, such as bronchitis, bronchiolitis, or pneumonia, but where the specific respiratory complication is not separately identified or is considered an integral part of the influenza presentation. It indicates a more complex respiratory involvement than uncomplicated influenza.
This code is appropriate when documentation specifies influenza accompanied by other respiratory symptoms like cough, shortness of breath, wheezing, or chest congestion, without a definitive diagnosis of a specific secondary respiratory infection. It is used when the physician's assessment links these respiratory manifestations directly to the influenza virus.
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