Which code would be used to report a cast change for the right thumb?

The code 2W0GX2Z is the appropriate choice for reporting a cast change for the right thumb because it follows the conventions and guidelines of ICD-10-PCS coding, specifically relating to cast management.

In this code, the structure is broken down as follows:

• The first character (2) signifies that the procedure is related to the musculoskeletal system.

• The second character (W) indicates that the procedure involves "immobilization."

• The third character (0) refers to the specific body part, which in this case is the thumb.

• The fourth character (G) represents the type of procedure, specifically "application of a cast."

• The fifth character (X) is a placeholder that signifies that there is no additional information needed.

• The sixth character (2) indicates that the procedure is for the right side.

This coding structure aligns properly with the guidelines for casting procedures specifically performed on the right thumb. The remaining options do not use the correct body part reference or do not align correctly with the procedure type needed for a cast change, which is why they are not suitable for this scenario.