Yes, UEI remotes designed in the last 5 years or so use 5 digit EFCs. In the example you've given, 00109 or 00113 will work for e.g. older Sony TVs. These only use one device number, and a single byte is sufficient to describe the IR signal. Such signals are described as Sony12 or Sony15, since the IR contains 12 or 15 bits. EFCs run from 00000 to 00255.

However many setup codes, including ones for Sony, use a combination protocol executor. That allows one setup code to control several device numbers. For example, a Sony receiver probably responds to devices 16 (basic stuff), 13 (tuner functions), 144 (sound fields), 16.40 (discrete inputs), etc.
16.40 is an example of a Sony20 signal.

It takes 2 bytes to describe these various signals, and EFCs can run from 00256 to (65535+256).

I intentionally chose 1658, since it is a Sony12/15/20 protocol executor.

If you tell us the components you are trying to control, we may be able to suggest more comprehensive setup codes than you have been using with the 8810.