What does moral code mean?

A moral code comprises the implicitly understood or explicitly stated rules, values, and principles that guide the behavior of an individual or group (e.g., “The community’s moral code emphasizes resolving disputes internally rather than involving the authorities”).

On a related note, if you can’t decide whether the word you need is moral or morale, remember that you can only use “morale” as a noun.

You can use QuillBot’s free Paraphraser to find alternative ways of expressing “moral code” in your specific context.