Hi Saurav,
No, there is currently no feature in Genesys Cloud to add multi-level wrap-up codes. However, there is an idea for this feature at Hierarchical Wrap-Up Codes and its status is "Upcoming Development," meaning this feature will likely be available in the future.
The latest admin response indicates that the goal is to provide a 2-level structure for both agent selection and administrative definition of wrap-up codes. The implementation requires coordination between multiple teams to finalize the backend changes, which is the most time-consuming part of the process. So, while it's coming, it's not available yet and requires significant backend work.