eBillingHub and BillBlast: Getting E-Billing and OCG Compliance Right

If your billing team spends part of every week chasing down rejected invoices on client e-billing portals, you're not alone. Corporate legal departments now route the vast majority of outside counsel invoices through platforms like Legal Tracker, CounselLink, and Brightflag, and every one of those portals enforces its own version of the client's Outside Counsel Guidelines (OCG) — task codes, billing increments, timekeeper rate caps, block-billing restrictions, and more. eBillingHub and BillBlast exist to sit between your practice management system and those portals, and to catch problems before a rejection lands on your desk.

What These Platforms Actually Do

Both tools solve the same core problem — translating your firm's billing data into the LEDES (Legal Electronic Data Exchange Standard) format each portal expects, and validating that data against the specific OCG rules attached to that client and matter — but they take slightly different approaches.

eBillingHub

• Deep integration with Aderant Expert, 3E/Elite, and other major practice management systems — invoices are pulled directly from your billing data rather than re-keyed.
• Pre-submission validation against client-specific OCG rule sets — flags task/activity code mismatches, rate cap violations, and formatting errors before the invoice ever reaches the portal.
• Centralized dashboard for tracking submission status across dozens of different client e-billing systems, which matters once a firm is submitting to more than a handful of portals.

BillBlast

• Broad portal coverage, including support for a long tail of smaller or less common client e-billing systems that larger platforms sometimes lag on.
• Rules-based compliance checking similar in spirit to eBillingHub, but with a different configuration model — firms coming from BillBlast often find the rule-authoring process more manual.
• Solid audit trail and reporting on rejection reasons over time, which is genuinely useful for spotting a client whose guidelines keep tripping up the same billing attorney.

Where OCG Compliance Actually Breaks Down

In our experience implementing and troubleshooting both platforms, the majority of rejections trace back to a small set of recurring issues — and almost none of them are the software's fault.

• Stale OCG rule configurations. Clients update their guidelines more often than firms update the rule sets in eBillingHub or BillBlast. A rate change or a new block-billing restriction that isn't reflected in the tool will generate rejections until someone catches it.
• Task code mapping gaps. UTBMS task and activity codes need to map cleanly from your practice management system's internal codes to what the client's OCG requires. New matter types or newly onboarded timekeepers are common places for this mapping to fall out of sync.
• Narrative and block-billing violations. Many OCGs now explicitly prohibit block billing or require a minimum level of narrative detail per time entry. This is a habit problem more than a system problem, but the validation engine can only catch what its rules are configured to catch.
• Timekeeper rate and classification mismatches. A timekeeper promoted from associate to counsel needs their rate and classification updated everywhere — practice management system, eBillingHub/BillBlast configuration, and the client portal's own timekeeper approval record — or invoices bounce.

A Practical Approach to Reducing Rejections

1. Audit your OCG rule configurations against actual current client guidelines at least twice a year — don't assume they're still accurate.
2. Build a formal process for updating task code mappings whenever a new matter type or billing arrangement is onboarded.
3. Route timekeeper rate and title changes through a single checklist that touches the practice management system, the e-billing tool, and any client portal timekeeper approvals in the same pass.
4. Review rejection reports monthly, not just when a client complains — patterns in rejection reasons usually point to a fixable root cause.
5. Train billing attorneys on the specific narrative and block-billing requirements of their top clients, not just general firm policy.

The Bottom Line

eBillingHub and BillBlast both do their core job well — the failures we see almost always trace back to configuration drift, not a limitation of the platform itself. Treating OCG compliance as an ongoing maintenance discipline, rather than a one-time setup task, is what separates firms with a low rejection rate from firms that are perpetually chasing down bounced invoices.