The phrase "in subsequent discussion" is correct and usable in written English. You can use it to refer to topics that have been previously mentioned, but have not yet been discussed in detail. For example, "We touched on the topic of climate change in the previous section, but we will delve into it further in subsequent discussion."
In subsequent discussion sections, I asked the students to plan experiments that would address questions raised in one lecture, using techniques explained in another.
The phrase only Son, which appears in The Gospel According to John (3:16) and proved so important in subsequent discussion, rarely occurs in apostolic literature.
The following results will be needed in subsequent discussion.
In subsequent discussion, these countries will be referred to as TPP-ASEAN countries.
As a result, these early responses have received the most attention in subsequent discussion.
In §1 we introduce some distinctions and terminology that will be useful in subsequent discussion.
After each focus group was conducted, the social psychologist and health economist met to discuss the results and determine if additional probing was warranted in subsequent discussions.
In subsequent discussions among ourselves Mdala set the tone.
The leaders, insiders say, could then flesh out details in subsequent discussions.
In subsequent discussions about his wartime experiences, he frequently glossed over that period.
Locke's account of personal identity became a standard (and highly contested) position in subsequent discussions.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK