Hello,
I am working on a hospital administrative dataset combined for multiple years between 2004-2018 the cases in the earlier years made use of ICD9, while 2016 upward made use of ICD10. I am trying to calculate the Charlson Co-morbidity index for each case in the combined data set. The available code index only accommodates either ICD9 or ICD 10, is there a way I can combine both. The code I used is pasted below.
charlson DX1-DX30 I10_DX1-I10_DX40 , index(c) assign0 wtchrl cmorb *for ICD 9* or charlson DX1-DX30 I10_DX1-I10_DX40 , index(10) assign0 wtchrl cmorb *for ICD 10*
I look forward to your help with cheerful optimism.
Olowu
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