Colossus Settlement Calculator: What It Includes and Omits

The Colossus settlement calculator is a proprietary software program that dozens of major insurance companies use to put a dollar figure on bodily injury claims. An adjuster enters your medical records into the system, Colossus assigns “severity points” to each injury, and the software spits out a settlement range the insurer uses to anchor its offer. The number you see is not a neutral valuation. It reflects how your injuries were coded, how the insurer has tuned the software, and in many cases, who your lawyer is.

What Colossus Actually Is

Colossus was built in Australia in the late 1980s as an “expert system” meant to simulate how a human adjuster would evaluate a personal injury claim. It is now maintained by DXC Technology as a module within its Assure Claims platform.¹ DXC does not insure anyone; it licenses the software to carriers that handle bodily injury claims.²

The system is used primarily for auto injury and general liability claims. It is not the only tool of its kind. Mitchell International sells ClaimIQ, and Verisk sells Claims Outcome Advisor, which Progressive and Liberty Mutual are known to use.³ If you are dealing with health insurance denials rather than a bodily injury claim, Colossus is not the software at issue, and different rules apply.

How It Turns Your Injuries Into a Dollar Range

Colossus is a rules-based system containing roughly 600 injury codes and more than 10,000 internal rules that walk an adjuster through a structured series of questions.⁴ The adjuster enters information from your medical records by hand. Each piece of data earns a certain number of severity points, which the software then multiplies by a dollar value to produce a minimum and maximum settlement figure.⁵

The split that drives the score is between “demonstrable” and “nondemonstrable” injuries. A demonstrable injury is one verified through objective testing like an X-ray or MRI. A nondemonstrable injury is a subjective complaint like pain or stiffness. Demonstrable injuries get substantially higher severity points.⁴

The specific inputs that move the number include:

ICD-10 diagnostic codes and CPT procedure codes from your medical records. Each injured body part needs its own distinct diagnosis.⁶
Treatment type, duration, frequency, and provider credentials. Diagnostic procedures like MRIs, discograms, and nerve conduction studies must be documented in the file.⁶
Objective clinical findings. Palpable muscle spasms, restricted range of motion, radiating pain, and neurological changes are coded as high-value “value drivers.”⁷
Jurisdiction. Jury awards vary by region, and the dollar conversion follows.⁴
A documented stabilization period, placed into one of eight time windows, plus a prognosis code ranging from full recovery to permanent impairment.⁶
Your attorney’s history. The software tracks whether your lawyer typically files suit or accepts early offers, and adjusts the output accordingly.⁴

What the Calculator Leaves Out

A jury can consider the full human cost of an injury. Colossus is narrower by design. Stress, loss of enjoyment of life, loss of consortium, and general inconvenience receive little or no weight unless tied to a formal psychological treatment code or a documented impairment rating.⁴ Lost wages, comparative negligence, and policy limits are not calculated automatically either; adjusters have to enter those separately.⁸

There is also a coverage gap in the software itself. Colossus’s 600 proprietary injury codes represent a fraction of the more than 12,000 ICD codes used in healthcare, meaning many conditions have no direct equivalent in the system.⁴ If your injury has no clean match, how an adjuster forces it into an available code can swing the result.

Why Two Insurers Can Produce Different Numbers

Each carrier can “tune” Colossus to its own internal settlement data. The same set of injuries can produce very different dollar ranges depending on which company is running the calculation.⁵ A 2012 Consumer Federation of America report, co-authored by former Allstate executive Mark Romano and former Texas insurance commissioner Robert Hunter, drew on internal documents from the class action Hensley v. Computer Sciences Corporation to describe how tuning has been used in practice. One CSC executive testified that the system could be turned up or down like a “water spigot” to hit specific savings targets, and another said Colossus had achieved average payout savings of roughly 19% for some clients.⁹

The CFA report identified several specific techniques:

Across-the-board reductions. One internal Allstate memo suggested payouts were set roughly 20% below the prior average.¹⁰
Selective data exclusion. Insurers removed higher-cost claims and large jury verdicts from the data sets used to calculate “normal” ranges, pulling averages down.¹¹
Injury downgrading. Adjusters with limited medical training were allowed or instructed to code injuries as less severe than physicians had documented.¹¹
Removing entire injury categories. Some insurers took high-cost categories like traumatic brain injuries out of the software entirely.¹²
Pressuring adjusters to assign partial fault to claimants without evidence.¹²

The American Insurance Association disputed the report, saying insurers use claims software as a consistency and fairness tool with oversight from trained adjusters.¹³ Courts have mostly agreed that the software itself is not evidence of bad faith. In Tilghman v. Allstate Property & Casualty Insurance Co. (2019), a bad-faith claim built on the use of Colossus was rejected outright, and in Brown v. Allstate Indemnity Co. (2014) the court found no impropriety in claim selection but recommended “enhanced management oversight” of the tuning process.⁸

Which Insurers Use Colossus

More than 30 carriers have been licensed to use the software. At the time of the 2012 CFA report, 13 of the top 20 insurers were on the list.⁹ Named users include Allstate (and its subsidiaries Encompass and Esurance), Farmers Insurance, The Hartford, Travelers, USAA, Erie Insurance, MetLife Home and Auto, American Family Mutual Insurance, CNA, and Zurich.³

How tightly adjusters are held to the software’s output varies. Allstate is widely described as the carrier most heavily dependent on it, giving adjusters little room to deviate. Travelers reportedly gives senior adjusters more autonomy, and Farmers reportedly becomes more flexible once a case enters litigation.¹⁴

How to Push the Number Up

Colossus runs on the quality of the data entered into it. If your medical records are vague or incomplete, the output will be low; there is nothing in the system that fills in gaps on your behalf.

Start with the diagnoses. Every injured body part should carry its own specific diagnosis in the medical record, not a lumped-together description. Objective findings outweigh subjective complaints, so ask your treating providers to document muscle spasms, restricted range of motion, radiating pain, and any neurological deficits explicitly.¹⁵ If you have a gap in treatment, make sure the records explain why. The software reads breaks in care as evidence of recovery.⁵

Who treats you also matters. Specialist care from an orthopedist, neurologist, or surgeon is weighted more heavily than treatment from a general practitioner. Chiropractic and physical therapy visits carry more weight when ordered by an M.D. or D.O., and chiropractic care beyond roughly 60 to 90 days may be discounted by the system.¹⁵ For a lasting injury, a formal impairment rating under the American Medical Association’s Guides to the Evaluation of Permanent Impairment is the clearest way to document permanence in a format the software recognizes.

Finally, remember that the software tracks your attorney. Lawyers known for taking cases to trial and rejecting inadequate offers tend to generate higher Colossus outputs. Lawyers who settle early tend to generate lower ones.⁴ Accepting a first software-driven offer without legal advice is often the costliest choice you can make.

When Litigation Becomes the Answer

If the offer stays low after documentation and negotiation, filing suit changes the game. Colossus cannot testify. Once the case is in court, valuation shifts from an algorithm to a jury that can weigh lost enjoyment of life, emotional suffering, and daily hardship, which are precisely the categories the software minimizes or ignores.⁷

Regulatory Guardrails Worth Knowing

In October 2010, Allstate settled with 45 states after an 18-month investigation led under the National Association of Insurance Commissioners. The company paid a $10 million fine and agreed to notify claimants when Colossus was used to evaluate their claims, strengthen oversight of the software’s tuning process, and stop requiring or incentivizing adjusters to settle solely at Colossus-recommended values.¹⁶ The agreement included no formal finding of systemic underpayment.¹⁷ If an Allstate claim of yours was run through Colossus, you are entitled to be told.

More broadly, in December 2023 the NAIC adopted a Model Bulletin on the Use of Artificial Intelligence by Insurance Companies, setting expectations that insurers be able to explain how AI affects claims decisions.¹⁸ By early 2025, 24 states had adopted the bulletin, and 12 were piloting an AI Systems Evaluation Tool for use during market conduct examinations.¹⁹ The bulletin does not ban any specific software or require insurers to disclose tuning parameters by default.

California’s SB 1120, effective January 2025, requires human professionals rather than automated tools to make final determinations to deny, delay, or modify care, but it applies in the health insurance context.²⁰ It does not reach bodily injury claims handled under auto or liability policies, which is where Colossus does its work.

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