Signs Your Billing Company Is Underperforming: 7 Red Flags

You pull the aging report Monday morning and a third of your AR is over 90 days. Your billing company blames “payer delays.” But admissions is sending clean intakes, census is steady, and the same claims keep showing up in the 120+ bucket month after month. The payers aren’t the problem. Your vendor is.

When cash flow slides at a behavioral health facility, operators blame payers first. Sometimes that’s right. More often, the billing vendor is missing the basics — and the symptoms are specific enough that an operator can diagnose the problem in an afternoon.

TL;DR: How to spot a failing billing vendor

AR over 90 days climbing past 20–25% is almost never a payer problem — it’s a follow-up problem.
First-pass denial rates above 10% on core SUD and mental health codes point to front-end gaps in VOB, auth, or coding.
Vague reporting — “we’re working on it” without claim-level detail — means no one is tracking the work.
Slow or templated communication from your billing contact is the leading indicator of everything else on this list.

What should behavioral health AR aging actually look like?

A healthy behavioral health AR distribution skews heavily into the 0–30 day bucket. As an industry observation, well-run SUD and mental health billing operations keep AR over 90 days in the 15–20% range, with total days in AR under 45. Commercial payers for residential and PHP/IOP services pay slower than primary care — but not unboundedly slower.

Warning signs in your aging report:

The over-90 bucket is growing month over month, not shrinking.
Large dollar amounts sitting in 120+ with no appeal activity logged.
Claims in “submitted” status for 30+ days with no payer acknowledgment — usually meaning they were never actually submitted, or were rejected at the clearinghouse and ignored.
The same claims appear in the aging report three months in a row with no status change.

Pull a claim-level aging report — not a summary. If your vendor can’t produce one within 24 hours, that itself is a red flag.

What denial rate is acceptable for SUD and mental health billing?

First-pass denial rates in behavioral health run higher than other specialties because of utilization review, level-of-care disputes, and auth complexity. Even so, a first-pass denial rate above 10% on core services — 90837, 90834, H0015, H0018, H2036 — usually means preventable errors are slipping through. Above 15%, you have a systemic problem.

Look at the denial reason codes. The ones that point directly to vendor underperformance:

CO-197 (auth missing/invalid) — a VOB and UR handoff failure.
CO-16 (claim/service lacks information) — sloppy claim scrubbing.
CO-45 or CO-97 recurring on the same CPT codes — nobody is correcting the fee schedule or bundling logic.
Timely filing denials — these should almost never happen. If you’re seeing them, claims are sitting in someone’s queue.

Denials are recoverable if they’re worked fast. The problem isn’t that denials happen — it’s that they’re not appealed inside the payer’s window. Ask your vendor for their appeal overturn rate. If they don’t track it, they’re not working appeals with any rigor.

Why is my billing company so hard to reach?

Communication is the leading indicator. Every operator who switches to Global AHS after a bad vendor relationship tells the same story: it started with slower email replies, then a ticketing portal replaced the phone, then the assigned contact turned over and the new person didn’t know the facility.

Specific red flags:

Your dedicated contact has changed twice in six months.
Questions about specific claims take 48+ hours to answer.
Reports come monthly instead of weekly, and they’re PDFs instead of exports you can filter.
You’re routed through a support queue instead of a person who knows your facility’s payer mix.

Behavioral health billing isn’t a ticketing problem. It’s a relationships-with-payers problem, and those relationships don’t form when the person on your account rotates every quarter.

What reporting should a billing vendor actually provide?

If your monthly report is a one-page summary of charges, payments, and adjustments, you’re flying blind. At minimum, you should have ongoing access to:

Claim-level AR aging by payer.
Denial log with reason code, date received, action taken, and current status.
First-pass clean claim rate and first-pass denial rate, broken out by payer.
Days in AR trended over the last 6–12 months.
UR approvals vs. denials by level of care.
Appeal pipeline — what’s pending, what’s overturned, what’s lost.

A vendor that can’t show you these numbers on demand doesn’t have them. And if they don’t have them, they’re not managing to them.

How do front-end gaps show up in back-end performance?

A lot of what looks like billing underperformance is actually broken handoffs upstream. Weak verification of benefits leads to surprise out-of-network claims. Missed auth extensions from utilization review lead to mid-stay denials that no appeal will save. Lapsed credentialing leads to “provider not par” denials that sit in AR for months.

This is why fragmented vendor stacks — one company doing VOB, another doing UR, another doing billing — tend to underperform. Nothing gets caught early because no one owns the full chain. Consolidating the stack, or at least auditing the handoffs, fixes more denial problems than hiring a better coder ever will. Worth looking at alongside your billing workflow.

How do I verify my billing company is underperforming this week?

Three things to do before Friday:

Pull a claim-level aging report. Sort by age bucket and dollar amount. Identify the top 20 oldest claims and ask your vendor, claim by claim, what’s being done on each.
Run a denial audit on the last 90 days. Group by reason code. Anything that clusters around auth, eligibility, or coding is preventable.
Request an appeal log. Count how many denials from the last quarter were actually appealed. The gap between denied and appealed is usually where your cash is.

If those three exercises surface gaps — or if your vendor pushes back on producing the data — you have your answer. Global AHS runs a free 6-month billing audit for treatment centers that want the numbers quantified before making any decisions. Request the audit here.

Frequently Asked Questions

What percentage of AR over 90 days is considered a red flag?

As an industry observation, behavioral health facilities with well-run billing operations keep AR over 90 days in the 15–20% range. Consistently above 25%, or climbing month over month, usually points to follow-up and appeal work not being done — not to slow payers.

What is a reasonable first-pass denial rate for SUD and mental health claims?

Behavioral health runs higher than primary care due to UR and level-of-care complexity, but a first-pass denial rate above 10% on core CPT and HCPCS codes (90837, H0015, H0018, H2036, etc.) generally indicates preventable front-end errors. Above 15% is systemic.

How quickly should my billing company respond to claim-specific questions?

Same business day for urgent questions, within 24 hours for routine claim status inquiries. If you’re waiting 48+ hours or getting templated replies from a ticketing portal, that’s a leading indicator of deeper performance issues.

What reports should I be getting from my billing vendor?

At minimum: claim-level AR aging by payer, a denial log with reason codes and current status, first-pass clean claim rate, days in AR trended over time, UR outcomes by level of care, and an active appeal pipeline. You should be able to pull these on demand, not wait for a monthly PDF.

Can switching billing companies mid-year cause cash flow disruption?

There’s always a transition period, but a structured handoff — running parallel for 30–60 days, transferring aging claims with documented status, and re-credentialing cleanly — typically stabilizes collections within one billing cycle. The bigger risk is staying with an underperforming vendor and watching AR age out past timely filing windows.

Not sure where your billing is leaking?

Global AHS will audit your last 6 months of billing for free. We pull denials, aged AR, timely filing misses, undercoded services, and underpaid claims, then hand you a written report showing the exact gaps and what they’re costing you. No commitment, no sales pressure — just your numbers, laid bare.

Request your free 6-month audit →