We have a very busy acute pain service that manages both epidurals and PCA pumps. Most of those patients are post-op, but there are some that are done for non-surgical or patients that may not be coming to the OR for a few days still. As with most anesthesia fees, most things we do are assigned a unit value from the RVG.
If they're post-op patients, most of the time you can only charge for management. If I remember correctly, that charge is 1-3 units per day. It doesn't sound like a huge amount, but if you're doing that on 50+ patients a day, it easily covers the cost of personnel. However, if you use general anesthesia for the procedure and place an epidural to be used for post-op pain control, you can also charge for epidural placement in addition to the daily management charge.
For laboring C-Sections, three separate fees may be generated. Placement and management of the epidural for labor, C-Section anesthesia, and then daily management for post op pain. All of these items have RVG values and CPT codes attached to them.
Some insurance companies are better than others at reimbursement of course. Most will reimburse for PCEA management, but some will not for straight IV PCA's.