Do user experience practitioners ever have to worry about code?

1. Does user experience require coding?
2. Do UI designers need to code?
3. What do user experience designers need to be concerned with?
4. Do UX designers need to know HTML?

Does user experience require coding?

No, most UX Designers are not required to code (at least, not at an advanced level). However, it's still to their advantage to develop an understanding and appreciation for what Developers do.

Do UI designers need to code?

UI Designers do not need to code, but it is extremely beneficial if you have programming skills. Depending on the nature of the product, it's also not unusual for UI/UX design and development to be intertwined into a single process.

What do user experience designers need to be concerned with?

A UX designer is concerned with the entire process of acquiring and integrating a product, including aspects of branding, design, usability and function.

Do UX designers need to know HTML?

Learning to code for designers is not necessary. But if they know a bit about code, they can understand a developer's perspective. It doesn't mean that they have to be an expert coder. But it would greatly benefit them if they knew a little about how to code HTML and CSS, maybe a little bit of JavaScript.