Why Personal-Injury-Heavy Medical Practices Carry 20+ Months of A/R — The LOP Cash Cycle Explained

A multi-location SE Florida imaging group sits on $6,167,218 of accounts receivable against $2,856,956 of annual collections. That is approximately 26 months of A/R on the books — six times what any revenue-cycle textbook would call healthy. The number is not wrong. The payer mix is what it is. And once you see the arithmetic, you will stop trying to "fix" it with better collections and start pricing it as a structural working-capital cost of the business model.

Key Takeaway: In a personal-injury-heavy medical practice, Letter-of-Protection (LOP) cases take 18–36 months to settle, PIP cases take 60–120 days to pay, and commercial insurance pays in 30–60 days. The weighted average of those three cycles, applied to the practice's payer mix, mathematically determines months of A/R. A practice with even 5% of scan volume from LOP can carry 40–50% of total A/R in LOP aging. That is not a collections problem. It is the cash cycle of the business model. DSO is the wrong metric to measure it.

The $6.17M Receivable That Wasn't a Collections Problem

When we first looked at the group's A/R aging, the instinct was the same one every banker, every CFO, and every outside advisor has: "Collections must be broken."

It was not broken. Here is what the aging actually looked like at the end of the most recent quarter:

(The percentages sum to more than 100% because insurance, LOP, and patient portions overlap on some accounts — LOP cases often have a patient-owed balance and a pending insurance claim running in parallel.)

The group's scan volume told a different story from the aging. Across 15 months of monthly activity data, 79% of scans were commercial insurance, 15% were PIP, and only 5% were LOP. So a 5% sliver of scan volume was producing nearly half of all outstanding receivables.

The gap between "5% of scans" and "48% of A/R" is not a collections gap. It is a cash cycle gap. Every commercial and PIP claim turns over in weeks to months. Every LOP case sits on the books for a year and a half to three years by design — because LOP collections are tied to the underlying personal injury lawsuit settlement, not to a standard insurance payment cycle.

Once you see the cycles side by side, the A/R number stops being a performance problem and becomes a structural question: do you understand the payer mix well enough to price it, fund it, and manage it?

The Service-to-Cash Clock Runs Differently for Each Payer

Here are the four distinct cash cycles running simultaneously inside a PI-heavy medical practice. Each one is governed by a different payer, a different process, and a different timeline:

Commercial insurance is the fast track. A clean claim submitted through EDI to a major commercial payer is adjudicated and paid in 30–60 days for most CPT codes. This is what revenue-cycle benchmarks and textbook DSO targets are built around.

PIP is slower but bounded. Florida's PIP statute requires carriers to pay or deny within 30 days of receipt, and demand letters plus litigation can extend the cycle. For most imaging providers with competent billing, PIP lands in the 60–120 day window. Not fast, but predictable.

LOP is a different animal entirely. An LOP case is not really a billing transaction — it is a lien on the settlement of a personal injury lawsuit. The medical provider sends a bill and medical records to the patient's attorney, who holds the lien as part of the case file. When the case settles (or a verdict is reached), the attorney distributes the settlement among the medical providers, the patient, and the law firm per the negotiated haircut. Settlements take 18–36 months on average. Some take longer. Some cases lose and pay zero. The provider carries the receivable the entire time.

Patient self-pay is technically the fastest cycle on clean accounts — but the collection rate on medical self-pay is low, so most unpaid patient balances get written off at 120 days rather than showing up as long-aged A/R.

A practice that bills only commercial insurance will look textbook on DSO. A practice that bills commercial + PIP will look elevated but explainable. A practice that bills commercial + PIP + LOP will look broken on conventional metrics, even when its collections operation is doing everything right.

The Arithmetic — How Payer Mix Mathematically Determines A/R Months

Here is the math that nobody builds, because it requires joining operational volume data (scans by payer) with financial data (collections by payer). Most practices have both datasets. Almost none have them joined.

Let me walk through what it looks like using the imaging group above. For a practice that runs at steady-state monthly volume, A/R accumulated in each payer bucket equals roughly the monthly service revenue in that bucket multiplied by the payment cycle in months.

Using the group's approximate Q1 2026 monthly numbers:

The LOP row is the one to stare at. Only 5% of scan volume. Only 11% of monthly revenue. But because the payment cycle is 24 months instead of 1.5 months, LOP produces roughly 60% of the implied A/R on a steady-state basis. The commercial book — 79% of scans and 57% of revenue — produces only 19% of implied A/R.

Layer 15 months of real activity over that math with modality mix shifts, payer mix shifts, and the aging of LOP cases from prior years that have not yet settled, and you get to $6.17M of total A/R in the practice we looked at. The multiple on monthly collections is 26x, which scares everyone who does not understand where it comes from.

It comes from the LOP cycle. And it is not a number you can fix with collections calls, denial management, or revenue cycle software. It is a number you can only change by changing the payer mix, pricing the LOP cycle correctly at the time of service, or funding it through the right kind of working capital.

Why DSO Is the Wrong Metric for a PI-Heavy Practice

Days Sales Outstanding assumes a single collection stream with a single cycle. We've written before about how averaging across bimodal payer populations hides the real story. In a PI-heavy practice, DSO is worse than misleading — it is arithmetically broken.

A practice with the imaging group's payer mix and cycle times cannot produce a DSO under 300 days without shrinking LOP exposure. The math simply does not allow it. A 30-day DSO target applied to this business would demand that the practice stop taking LOP cases entirely — which might be the right decision, but it is not a collections decision. It is a strategic pricing and payer-mix decision.

Better metrics for a PI-heavy practice:

• Per-payer DSO. Compute DSO separately for commercial, PIP, and LOP. The commercial number should match textbook benchmarks (30–45 days); the PIP number should track statutory cycle; the LOP number is naturally long and measured against the settlement curve.
• A/R months by payer. Divide each payer's A/R by its own monthly revenue. This tells you whether each payer stream is aging normally against its expected cycle.
• LOP realization rate. At settlement, compare the amount collected to the amount billed. This is the real measure of LOP economic health. Industry norms run 30–55%. Lower than 30% and the LOP book is worth less than it looks. Higher than 55% and you may be leaving money on the table with conservative settlement negotiations.
• LOP aging distribution. How much of the LOP A/R is over 24 months old? Cases that have been sitting three-plus years are increasingly likely to be lost cases, cold files, or cases where the attorney has lost interest. That tail is the write-down risk.

None of these metrics require new systems. They require joining operational data to financial data and running the math on per-payer cohorts. Most billing companies have the data. Almost none report it this way.

What Lenders Should Know Before Underwriting LOP Collateral

If you are a commercial banker or LOC underwriter looking at a medical practice's A/R as collateral, the single most important question is: what portion of A/R is LOP? Every other underwriting question flows from that one.

Commercial insurance and PIP receivables are underwriteable on conventional medical A/R terms. Eligible A/R typically excludes balances over 90 or 120 days, applies a 20–30% discount to insurance aging, and assumes a 60–90 day turnover cycle. Lenders who specialize in medical A/R have pricing and advance rates for this book.

LOP is different. The receivable is not backed by an insurance policy or a statutory obligation. It is backed by the expected settlement of a personal injury lawsuit, which depends on liability, damages, the patient's recovery, and the attorney's skill. Every one of those factors can move the realization rate by 20 percentage points or more.

A responsible lender underwriting a medical practice with LOP exposure should ask for:

1. Three-year historical realization data — closed LOP cases, amount billed versus amount collected, case count, average time to settlement. This produces an empirical realization rate that can be applied to the current LOP book.
2. Aging distribution of LOP A/R — how much is 0–12 months, 12–24 months, 24–36 months, 36+ months. Cases older than 36 months have meaningful write-down risk that the straight aged-A/R report will not show.
3. Counterparty concentration — which law firms hold the largest LOP balances, how long those firms have been working with the practice, and what the historical settlement rate is with each firm. A concentrated LOP book held by one or two firms is either a strength (deep relationship, predictable settlements) or a vulnerability (if the relationship breaks, a large chunk of A/R is at risk).
4. Pricing policy — does the practice bill LOP at a premium to commercial rates? If yes, how much, and does the realization math still work after the discount? If not, the LOP book is subsidizing commercial volume.

Advance rates on LOP A/R should be meaningfully lower than on commercial — often 20–40% versus 60–80% on commercial. Some asset-based lenders exclude LOP entirely from the borrowing base. That is a conservative but rational stance given the realization volatility.

The practices that secure the best lending terms are the ones that present this data proactively. Walking into a credit meeting with a per-payer DSO breakdown, a realization-rate history, and a counterparty concentration chart changes the conversation from "your A/R looks scary" to "here is exactly what your A/R is, here is how each piece performs, and here is what we think a reasonable advance rate looks like."

The Monday Morning After the A/R Deep-Dive

The imaging group's owner spent most of a decade hearing "your A/R is too high" from every banker, every CFO, and every outside consultant. Each one looked at the top-line number, compared it to a benchmark that did not fit the business, and recommended tighter collections.

The owner had run tighter collections for years. Denial management was clean. Electronic remittance was set up. Patient statements went out on time. The A/R stayed at $6M-plus because the LOP book kept rolling a fresh cycle of 18–36-month settlements — not because anyone was slacking on commercial follow-up.

When we broke the A/R into per-payer cohorts, the conversation changed in one meeting. The commercial book was collecting on textbook timelines. The PIP book was within statutory cycles. The LOP book was long because LOP cases are long — and the realization rate on closed LOP cases over the previous three years was tracking at the upper end of industry norms. The practice was not broken. It was just being measured wrong.

Within a quarter, the owner had a lender who understood the structure, an advance rate that reflected the per-payer risk, and a monthly dashboard that tracked per-payer DSO, LOP aging distribution, and counterparty concentration. Monday morning stopped starting with a defense of the aggregate A/R number. It started with a review of which LOP cases were approaching expected settlement, which commercial claims had aged past 60 days, and which law firms were overdue for a check-in call.

This is the kind of clarity that does not come from a monthly financial statement. It comes from reading the business the way an operator reads it — through the cycles that actually govern the cash. Read how accounting becomes an ROI center at the practices we work with.

Frequently Asked Questions

Why does my medical practice have so much A/R? If your practice bills any meaningful share of PIP or LOP cases, you will carry more A/R than a commercial-only practice — because PIP cycles run 60–120 days and LOP cycles run 18–36 months. The headline A/R number and the DSO ratio are nearly meaningless without a per-payer breakdown. Pull A/R separately for commercial, PIP, LOP, and patient balances, then measure each one against its own expected cycle.

How long does a letter of protection take to pay? The industry average is 18–36 months, measured from the date of service to the date of settlement distribution. Some cases settle faster (12–18 months for clean, high-damage cases with cooperative attorneys) and some take much longer (48+ months for contested liability or extended litigation). Individual practices can estimate their own LOP cycle by pulling closed-case data over the prior three years.

What is a realistic LOP realization rate? Industry norms run 30–55% of billed charges at settlement distribution. Realization depends on case outcome, counterparty relationships, and the quality of the underlying medical documentation. A practice with a three-year history of closed LOP cases can compute its own empirical realization rate and apply it to the current LOP book to produce a credible cash expectation for the next 24–36 months.

How do banks underwrite medical A/R that includes LOP? Conservative lenders exclude LOP entirely from the borrowing base. Most specialty medical A/R lenders will include LOP at a meaningfully reduced advance rate — often 20–40% versus 60–80% on commercial — provided the practice can produce realization history, aging distribution, and counterparty concentration data. Lenders who do not understand LOP tend to either refuse the business or mis-price the risk; the practices that secure the best terms present the data proactively.

Is a high A/R number always a problem? No. It depends on the payer mix. A commercial-only practice with $6M of A/R against $3M of annual collections would be a crisis. A PI-heavy practice with the same ratios can be operating exactly as designed. The only way to tell the difference is to decompose A/R by payer and measure each cohort against its own expected cycle.

Work With a Firm That Reads Your A/R the Way Your Business Actually Runs

If you run a personal-injury-heavy medical practice in Broward County or South Florida — or you underwrite credit for one — and you want a per-payer decomposition of your A/R with the arithmetic behind it, reach out. The analysis pulls from data you already have, and the output is usually the first time anyone has shown the owner or the banker how the practice actually converts services to cash.

Disclaimer: This article is for informational purposes only and does not constitute tax, legal, or financial advice. Tax, legal, and financial situations vary — consult a qualified professional for advice specific to your circumstances. Practice examples are anonymized composites based on real client data; identifying details have been changed.