Electronic billing (e-billing) will be mandatory in Colorado for workers’ comp medical bills starting on January 1, 2026. Many Colorado practices have gotten ahead of the deadline and made the switch.

The results so far are glorious.

daisyBill tracks every e-bill our clients send, from submission to payment. See the data below for all Colorado providers who submitted e-bills using daisyBill from January 1 through September 12 of this year:

• Colorado providers submitting e-bills with daisyBill: 155
• Count of workplace injuries treated: 3,929
• Count of workers’ comp e-bills submitted: 27,033
• e-Bills compliantly accepted by payer: 96%
• Percentage of e-bills requiring resubmission as Duplicates: 0%
• Average number of working days to payment: 3.9

As the data show, 96% of Colorado daisyBill providers’ e-bills went through smoothly for processing. Of the 27,033 e-bills providers submitted, only 42 required resubmission as a Duplicate Bill, less than a fifth of a percent (statistically, 0%).

The net result: providers’ payments arrived on average in just under four working days.

But it gets even better. Colorado's insurer of last resort, Pinnacol Assurance, is the single largest workers’ comp payer in our system (and the state), paying 82% of our Colorado e-bills so far this year. On average, Pinnacol paid daisyBill providers in a mind-blowing 2.1 days.

Take a look at the detailed daisyData below on our top 20 payers, and see why no practice should wait for the 2026 deadline to switch to e-billing.

CO’s New e-Billing Requirement

Under the Code of Colorado Regulations Section 1101-3, Rule 16-8-1, effective January 1, 2026:

• All payers except self-insured employers must accept providers’ e-bills for workers’ comp treatment.
• All providers who submit 25 or more workers’ comp bills monthly must do so electronically.
• Providers may not submit duplicate paper versions of e-bills.
• Payers must remit payment within 30 days for all bills, electronic or paper.
• Payers must submit an Electronic Remittance Advice (ERA) file, which automatically posts payment details to the provider’s e-billing system, within 30 days of receiving the bill or within five days of generating payment.

As the data below show, this mandate is a massive win for Colorado providers.

daisyData: Top 20 CO Payers

Below, we list the 20 largest payers (including insurers and Third-Party Administrators (TPAs) managing claims on behalf of insurers and employers) that Colorado daisyBill providers billed between January 1 and September 12.

For each, we list the number of providers who sent e-bills to the payer, the count of e-bills sent, the percentage of e-bills the payer accepted, the percentage of e-bills that required resubmission (a “Duplicate Bill”), the number of e-bills that required resubmission, and the average number of days to payment.

Inevitably, some payers perform better than others with respect to accepting and processing e-bills. The good news:

• Pinnacol (which received the lion’s share of daisyBill e-bills) required providers to resubmit only 4 out of 22,243 e-bills and paid in 2.1 days on average. Incredible.
• Other payers that paid in less than 10 days include CorVel, The Hartford, PMA, CopperPoint, and Sentry.

The not-so-good news:

• The slowest of the bunch was WCF Insurance, which took an average of 21.2 days to pay providers. This is still within the 30-day legal deadline, but definitely subpar.
• Travelers and Tristar Risk Management also had average days to payment north of 20.

e-Billing = Easy Revenue Management

The data can’t lie.

The relatively minor investment of time, training, and resources required to switch to e-billing drastically reduces administrative friction, exponentially speeds up payment, and (if you use the right software) can increase overall revenue.

daisyBill is an end-to-end e-billing software platform specifically for workers’ comp, submitting clean, compliant e-bills. Automated prompts help staff follow the steps necessary to keep each e-bill moving through the cycle, and analytics timestamp and track every bill so your practice is never in the dark.

Whether you’re interested in using daisyBill or not, contact our experts with any questions you have about e-billing technology or requirements ahead of the 2026 deadline. We’re here to empower providers, clients and non-clients alike.

You can reach our team using the pink chat icon on this screen or email info@daisybill.com.

Eliminate friction and get paid faster. Schedule a chat with our team to see how daisyBill can transform workers’ comp billing for you.

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