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mapping between concept code to ICD-10-PCS

#1

Hi,

I am working on ICD codes for procedures. I was trying to connect between concept code and ICD-10-PCS for procedures. I red documents saying, first map between concept code to ICD9 and ICD9 to ICD-10-PCS. Unfortunately, I could not find any mapping file between concept code to ICD9 (it has only for ~4000 codes). Could you please help me get this mapping files.

#2

Procedures are not as neat as diagnoses in the OHDSI universe.
What is your source terminology? (what country your data come from?)

There is no major consensus on target terminology.

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