That's very surprising.
I am from Saguenay—Lac‑Saint‑Jean. It's home to the company Rio Tinto, previously known as Alcan. Many diseases, particularly cancers, are known to be linked to the jobs performed by the people at those plants. The type of disease they develop, bladder cancer or what have you, tells doctors that it may be due to exposure to chemicals at Alcan or another aluminum smelter. That is a form of recognition.
What you are telling me is that DND has no framework for identifying diseases former members of the armed forces may develop as a result of their exposure to chemicals or toxic substances.