Section 4: Vaccine Safety Public Health and Clinical ...

Jan 16, 2009 · Classification as a single symptom is done for instance with the ICD-9 code 780-789 “Signs, symptom and ill-defined conditions” or its equivalent in ICD-10, chapter XVIII (R00-R99). This classification is easy to use and respects the fact that, at least early in its course, it is hard to tell whether a symptom can be organically explained ... ................
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