How to combine primary diagnosis variable and secondary diagnosis variable in stata when using ICD 10 codes

[Antony Arumairaj]

What stata command is used to combine primary diagnosis variable and secondary diagnosis variable in stata when using ICD 10 codes

[Leonardo Guizzetti]

Your question is too vaguely stated as is. Please take some time to read the FAQ, and ask a more effective question. Please also tell us what your data look like by giving us a reproducible example using -dataex-. This too is explained in the FAQ.