ChironAI™ OM · ToolsBusiness days · calendar days · court holidays
Never count a statutory window by hand again.
Five working days for a Doctor’s First Report. Twenty days after a change in condition. Thirty for a QME report, with an extension request due five days before. Some clocks skip weekends and California court holidays and some do not — pick the deadline, enter the start date, and see the day it falls due and how it was counted.
Every deadline this calculator counts
| Deadline | Clock starts | Days | Authority |
|---|---|---|---|
| Doctor’s First Report (DWC Form 5021)Owed by: Primary treating physicianThe regulation says 5 working days. Under Lab. Code §4603.2(a)(2), a late first report can also cost payment for services before it was submitted, if MPN status is disputed. | Date of the initial examination | 5 business | 8 CCR §9785(e)(1); Lab. Code §6409(a) |
| PR-2 after a reportable event (change in condition, new treatment, hospitalization, return to work…)Owed by: Primary treating physician"Unless good cause is shown" — good cause is not modeled here. | Date the event occurred | 20 calendar | 8 CCR §9785(f) |
| PR-2 progress report during continuing treatmentOwed by: Primary treating physicianNo later than 45 days from the last report, even if nothing else has happened. | Date of the last report of any type | 45 calendar | 8 CCR §9785(f)(8) |
| Permanent & stationary reportOwed by: Primary treating physician | Date of the examination finding the condition permanent and stationary | 20 calendar | 8 CCR §9785(i) |
| Comprehensive medical-legal report (initial or follow-up)Owed by: QME, panel QME or AMEExtensions on QME Form 112, requested no later than 5 days before the report is due (§38(d)): up to 30 days awaiting test results or a consult report (§38(c)(1)); 15 days for good cause (§38(c)(2)). No extension for missing records (§38(h)). A late report lets either party obtain a replacement panel (8 CCR §31.5(a)(12)), and neither party is liable for it unless both waive in writing (Lab. Code §4062.5). | Date the evaluator saw the worker or began the evaluation | 30 calendar | 8 CCR §38(a) |
| Supplemental medical-legal reportOwed by: QME, panel QME or AMEThe parties may agree to one extension of up to 30 days. | Date of the written request for a supplemental report | 60 calendar | 8 CCR §38(i) |
| Appointment notification (QME Form 110)Owed by: Panel QME | Date the appointment was scheduled | 5 business | 8 CCR §34 |
| Application for Independent Medical ReviewOwed by: The worker (the physician’s office often helps)10 days for a drug on the MTUS Drug Formulary, 30 for other treatment, plus 5 / 10 / 20 days when the decision was served by mail, fax or email to an address in California / elsewhere in the US / outside the US. | Date the UR decision was served on the worker | 30 calendar | Lab. Code §4610.5(h)(1); 8 CCR §10605(a) |
| Prospective or concurrent UR decision (owed to you)Owed by: The claims administratorFive normal business days, and in no event more than 14 days from the physician’s treatment recommendation. Expedited review: 72 hours (§4610(i)(3)). | Date the claims administrator received the RFA and supporting information | 5 business | Lab. Code §4610(i)(1) |
| Retrospective UR decision (owed to you)Owed by: The claims administrator | Date the information reasonably necessary to decide was received | 30 calendar | Lab. Code §4610(i)(2) |
| Payment of a treatment bill (owed to you)Owed by: The employer or claims administrator60 days when the employer is a governmental entity. Late: +15% plus interest — see the penalty calculator. | Date the payer received the itemized bill with required reports | 45 calendar | Lab. Code §4603.2(b)(2)–(3) |
| Payment of a medical-legal bill (owed to you)Owed by: The employer or claims administratorLate and unreasonably unpaid: +10% plus 7% interest — see the penalty calculator. | Date the payer received the bill and report | 60 calendar | Lab. Code §4622(a)(1) |
| Explanation of review contesting or denying a treatment bill (owed to you)Owed by: The employer or claims administrator | Date the payer received the itemization | 30 calendar | Lab. Code §4603.2(b)(2) |
| Request for second bill reviewOwed by: The providerMiss it on an amount-only dispute and the bill is deemed satisfied. The payer must answer within 14 days (§4603.2(e)(3)). | Date the explanation of review was served | 90 calendar | Lab. Code §4603.2(e)(1); §4622(b)(1) |
California judicial holidays, 2026 and 2027
Business-day clocks skip weekends and these days (Code Civ. Proc. §135). A holiday that falls on a Saturday is observed the Friday before; on a Sunday, the Monday after. The second Monday in October is not a judicial holiday.
- Thursday, January 1, 2026 — New Year’s Day
- Monday, January 19, 2026 — Martin Luther King Jr. Day
- Thursday, February 12, 2026 — Lincoln Day
- Monday, February 16, 2026 — Presidents’ Day
- Tuesday, March 31, 2026 — Cesar Chavez Day
- Monday, May 25, 2026 — Memorial Day
- Friday, June 19, 2026 — Juneteenth
- Friday, July 3, 2026 — Independence Day
- Monday, September 7, 2026 — Labor Day
- Friday, September 25, 2026 — Native American Day
- Wednesday, November 11, 2026 — Veterans Day
- Thursday, November 26, 2026 — Thanksgiving Day
- Friday, November 27, 2026 — Day after Thanksgiving
- Friday, December 25, 2026 — Christmas Day
- Friday, January 1, 2027 — New Year’s Day
- Monday, January 18, 2027 — Martin Luther King Jr. Day
- Friday, February 12, 2027 — Lincoln Day
- Monday, February 15, 2027 — Presidents’ Day
- Wednesday, March 31, 2027 — Cesar Chavez Day
- Monday, May 31, 2027 — Memorial Day
- Friday, June 18, 2027 — Juneteenth
- Monday, July 5, 2027 — Independence Day
- Monday, September 6, 2027 — Labor Day
- Friday, September 24, 2027 — Native American Day
- Thursday, November 11, 2027 — Veterans Day
- Thursday, November 25, 2027 — Thanksgiving Day
- Friday, November 26, 2027 — Day after Thanksgiving
- Friday, December 24, 2027 — Christmas Day
- Friday, December 31, 2027 — New Year’s Day
The rules behind these tools run inside ChironAI OM on every case and every bill, so nobody in your practice has to count days by hand.
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