Workers’ Comp UR Extension Notices: What to Check Beyond Peer-Review Calls

Auditing Utilization Review Extensions in California Workers’ Compensation

When an injured worker’s doctor submits a Request for Authorization (RFA) for medical treatment in California workers’ compensation, strict statutory timelines govern the claims administrator’s decision. Under Labor Code section 4610(i)(1), prospective or concurrent utilization review (UR) decisions must be made within five normal business days from receipt of the request and necessary supporting information. However, claims administrators frequently claim that an attempted peer-review phone call between their reviewing physician and the treating doctor automatically extends this deadline to fourteen calendar days.

The deadline dispute affects who may decide whether the requested treatment is medically necessary. In Giron v. KDF Forestry, the WCAB rescinded a finding of timely UR because the trial judge treated peer-review telephone attempts as an automatic extension and assumed the decision had been timely conveyed. The Board remanded for a proper factual record; it did not authorize surgery or finally determine that UR was untimely. Giron, slip op. at 6–9.

The Statutory Baseline: Five Business Days and Written Notice Rules

Labor Code section 4610(i)(1) addresses decisions within five normal business days after receipt of the request and the information reasonably necessary to make the determination, subject to the statutory requirements described in Giron. To extend this five-day window up to the statutory maximum of fourteen days, the claims administrator cannot rely on informal office communications alone. Labor Code section 4610(j)(2) mandates that if a decision cannot be made within five business days because the employer lacks information reasonably necessary to make a determination, the employer must immediately notify the treating physician and the injured worker in writing. That written notice must explicitly specify the missing information required to make the determination.

In historical practice, insurers relied on older panel decisions that permitted telephonic peer-review contacts to extend the review window. However, legislative amendments effective in 2018 repealed former section 4610 provisions that supported those decisions. Under operative law, phone calls and voicemail messages left for a treating physician do not create an automatic fourteen-day extension. A claimed missing-information extension needs evidence of the immediately required written notice to the physician and employee, identifying the necessary information. The record must establish the applicable timing rather than assume fourteen days applies to every request.

Checklist for Evaluating UR Extension and Timeliness Claims

When reviewing a denial or delay of requested medical care, use this systematic checklist to audit the utilization review timeline:

• Identify the Receipt Date: Verify the exact date and timestamp when the RFA and supporting records were delivered to the claims administrator or its UR vendor via fax confirmation or electronic transmission.
• Calculate the Five-Day Mark: Count five normal business days from the receipt date, using the applicable normal-business-day calendar.
• Inspect for Written Extension Notices: Check whether a written notice of delay under Labor Code section 4610(j)(2) was generated and served within the initial five-business-day window.
• Examine the Contents of the Notice: Ensure the written notice explicitly identifies specific missing medical information necessary for the review, rather than issuing a generic statement that peer-to-peer discussion is pending.
• Verify Proof of Service: Inspect the proof of service attached to both the extension notice and the final UR determination to confirm compliance with WCAB Rule 10625(c).
• Audit delivery and conveyance: Keep evidence of when the actual decision reached the physician, worker, and counsel. Giron required an evidentiary record rather than an assumption of timely delivery.

Conditional Examples: Valid vs. Invalid UR Extensions

To illustrate how statutory extension rules apply in practice, consider the following factual scenarios:

Scenario A: Informal Peer-Review Phone Calls. A treating surgeon faxes an RFA for lumbar fusion surgery on Thursday, September 4. The insurer’s UR vendor receives thirty-nine pages of supporting records the same day. On September 10 and 11 (the fourth and fifth business days), a reviewing physician leaves voicemail messages at the surgeon’s office seeking a peer-to-peer discussion. No written notice requesting specific missing medical records is sent to the doctor or worker. The UR vendor issues a denial on September 12. Result: These assumed facts identify a substantial timing objection. Telephone attempts alone do not satisfy the written-notification requirement. Confirm the full record before deciding whether an exception or valid notice changes the deadline; Giron remanded for that inquiry rather than conclusively deciding it.

Scenario B: Timely Written Notice for Missing Records. A treating doctor submits an RFA for physical therapy on day one. On day three, the UR organization serves a written notice on the doctor and employee stating that operative reports mentioned in the RFA were omitted and specifies those documents as necessary for review. The UR vendor issues its determination six business days after the initial RFA. Result: A written notice is relevant evidence, but it does not by itself prove that the eventual determination was timely. Check whether the information was reasonably necessary, whether notice was immediate, when the information arrived, and which decision deadline then applied.

Proof of Service and Conveyance Requirements

Giron explained that a timely decision also needs timely communication. The trial judge could not assume that the unsigned determination had been mailed or received. The panel discussed WCAB Rule 10625(c) and the requirement for a dated, verified proof of service; Evidence Code section 641 did not support an assumption of receipt without proof of proper mailing. The particular delivery record, not the letter’s date alone, matters. Giron, slip op. at 7–8.

For a detailed analysis of how the WCAB addresses peer-review phone calls, statutory extension rules, and proof of service requirements in recent litigation, see our case study on Giron v. KDF Forestry. Injured workers facing improper medical denials can also review our guide on navigating treatment denials, UR, and IMR appeals to protect their rights.