In this context I'm using fundamental force in the scientific meaning:
Gravitational, Electromagnetic, Weak, and Strong forces/interactions. They're the reason our universe is dynamic, that it changes. So in that sense, "life" is not a fundamental force, but it springs from them.
Code as used here is the text we write in a specific programming language and execute. So it's the narrow definition where it's human technology.
To "act" implies an agent that performs an action, with action being the use of energy to achieve a side effect in a system.
Is biology code? I'd say it's computational. It's computing the coded instructions defined by DNA.
The point I was trying to get across is that programming language code somehow seems to tap into the universe at a very deep, almost fundamental level, and we've essentially let the genie out of the bottle without an understanding of the implications.
It's a huge responsibility. It's somehow both exciting and terrifying at the same time to ponder what the future of computing holds. AI being the obvious example.