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st: -icd9- crashes Stata

From   Jeph Herrin <>
Subject   st: -icd9- crashes Stata
Date   Thu, 12 Dec 2013 08:24:28 -0500


I have been trying to use the Stata command -icd9- to process a variable containing (yes) ICD9 codes. The same fragment of code ran correctly in the past, but now

 capture : icd9 dxcode, check gen(invalid)

causes Stata to crash every single time. The dataset is large (~60m obs, 5gb) but Stata has no problem eg merging or sorting the same dataset, so I don't see why that should be an issue. Any thoughts? Any alternatives? I do not often work with ICD9 codes.

-dxcode- is str7, if that matters.

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