There is a pretty close match using code 10030, which will do Vol+/-, mute, CH+/- and power.
You can also try 10178 or 11758.
By digital adaptor, I assume you mean the remote labeled Delta in the Comcast remote pictures
. If you have one of the DVR or On Demand remotes, tell us, because those remotes can be customized to make every function on the TV work.
Let us know if this works.