Influenza in ICD10: Difference between revisions
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{{ICD10 coding guideline}} | {{ICD10 coding guideline}} | ||
==Identifying the Presence of Influenza== | ==Identifying the Presence of Influenza== | ||
*It's not always simple. The reason is that the value of lab tests in helping us figure out whether a person has influenza depends on: | *It's not always simple. The reason is that the value of lab tests in helping us figure out whether a person has influenza depends on: | ||
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*The way this definition differs from that of the WRHA is primarily that -- if a test was done -- they consider a person negative (influenza ruled out) if the FINAL Cadham result is negative, while during flu season we consider that person to be +influenza if the medical team thought they had influenza and gave the person a full course of antiviral drug. | *The way this definition differs from that of the WRHA is primarily that -- if a test was done -- they consider a person negative (influenza ruled out) if the FINAL Cadham result is negative, while during flu season we consider that person to be +influenza if the medical team thought they had influenza and gave the person a full course of antiviral drug. | ||
*We are aware that neither of these approaches are THE TRUTH. The WRHA definition almost certainly slightly under counts cases, while our ICD10 definition listed above almost certainly slightly over counts cases. | *We are aware that neither of these approaches are THE TRUTH. The WRHA definition almost certainly slightly under counts cases, while our ICD10 definition listed above almost certainly slightly over counts cases. | ||
== Coding other infections caused by influenza virus == | |||
Use and see [[Influenza virus NOS -- should almost never be used#Coding other infections caused by influenza virus]]. | |||
==ICD10 Diagnosis codes for Influenza== | |||
There are 4 influenza-related codes we're using in ICD10. | |||
*3 code are for actual disease due to influenza: | |||
**[[Influenza pneumonia]] | |||
**[[Influenza without pneumonia but with other respiratory manifestations]] | |||
**[[Influenza with nonrespiratory manifestations]] | |||
*The 4th has a long & weird name: '''[[Influenza virus NOS -- should almost never be used]]''' (see more info in that article) | |||
**See: [https://en.wikipedia.org/wiki/Influenza#Types_of_virus Wikipedia for types of virus included] | |||
== Alternate ICD10s to consider coding instead or in addition == | |||
*[[Haemophilus influenzae (H. flu)]] (this is not an influenza [[Pathogens|pathogen]]) | |||
*[[Parainfluenza virus]] (this is not influenza an [[Pathogens|pathogen]]) | |||
== Related Articles == | == Related Articles == | ||
{{Related Articles}} | {{Related Articles}} | ||
[[Category: Influenza]] | [[Category:Influenza]] | ||
[[Category: ICD10 Diagnosis]] | [[Category:ICD10 Diagnosis]] | ||