If in middle of Shacharis one remembered that he did not say the blessing of Netilas Yadayim, what is he to do?<a href="#_ftn1" name="_ftnref1">[1]</a>
Some write one may wash and say a blessing even in middle of Birchas Kerias Shema.
<a href="#_ftnref1" name="_ftn1">[1]</a> Piskeiy Teshuvos 3 footnote 53

Shulchan Aruch HaRav | If in middle of Shacharis one remembered that he did not say the blessing of Netilas Yadayim, what is he to do?

If in middle of Shacharis one remembered that he did not say the blessing of Netilas Yadayim, what is he to do?[1] Some write one may wash and say a blessing even in middle of Birchas Kerias Shema. [1] Piskeiy Teshuvos 3 footnote 53