shoulder surgery

It's two totally different procedures... Not sure what you mean, are you asking about bundling? The difference is 23412 is open rotator cuff repair for a chronic tear while 23130 is partial acromioplasty.
However, these are done concurrently almost every time. It's the same idea as 29827/29826 via scope. If you don't have a coding program you can check edits with a tool like this: or go to the CMS NCCI page:

I believe there are CPT assistant articles you can also check.

Many payers won't allow the SAD. Example:

Subacromial impingement syndrome: Subacromial decompression/acromioplasty is considered not medically necessary for all indications.