ISO exclusion ยท commercial auto

CA 23 94 Silica Or Silica-Related Dust Exclusion For Covered Autos Exposure

Filings
272
latest Oct 16, 2026
Filing companies
146
70 carrier groups
States
34
Latest edition
10 13
Oct 2013

Coverage description

An Insurance Services Office (ISO) standard form. It excludes auto liability for bodily injury from inhaling or ingesting silica or silica-related dust, property damage from contact with or presence of it, and costs of testing, cleaning up or otherwise responding to it.

How the form has changed

The 10 13 edition updates the coverage forms it applies to and the form date. The exclusion wording is the same.

Editions

Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.

EditionFilingsCompaniesStatesFiled
10 13Oct 2013Latest26113931Nov 2021 to Oct 2026
03 06Mar 20061076Jun 2022 to Mar 2026

1 other edition date appears in one or two filings each, often carrier-specific versions: 10 23.

What the filings show

  • Edition in use: in the past 12 months, 63 companies filed the 10 13 edition and 2 companies filed 03 06.
  • CA 99 44 (Loss Payable Clause) is filed alongside it most often, in 242 of the same filings (89%).

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.

Carriers filing this form

The 10 carrier groups with the most filings that include CA 23 94, out of 70 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company151510 13Jul 12, 2024
Nationwide Corporation Group11 group companies filed it, led by Allied Insurance Company of America and Nationwide Mutual Insurance Company15610 13Apr 7, 2026
Arch Insurance Group3 group companies filed it, led by Arch Indemnity Insurance Company and Arch Insurance Company14210 13Apr 8, 2026
MS & AD Insurance Group3 group companies filed it, led by Transverse Insurance Company and Mitsui Sumitomo Insurance Company of America13610 13Sep 4, 2025
OLD Republic Group4 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company13110 13May 11, 2026
Liberty Mutual Group2 group companies filed it, led by State Automobile Mutual Insurance Company and General Insurance Company of America12310 13Jun 17, 2026
Berkshire Hathaway Group9 group companies filed it, led by GEICO General Insurance Company and GEICO Marine Insurance Company10610 13Jul 9, 2026
Scor GroupGeneral Security National Insurance Company10110 13Jun 9, 2026
Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company8410 13Jun 24, 2024
Grange Insurance GroupGrange Insurance Association7310 13Jun 26, 2026

How the largest insurers handle CA 23 94

Groups among the largest commercial auto insurers that filed CA 23 94 or their own version in the past five years.

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States

Number of filings that include CA 23 94 in each state, Oct 2021 to Oct 2026. Darker states have more filings.

Tennessee: 0 filingsTNAlabama: 1 filingAL1Florida: 0 filingsFLGeorgia: 2 filingsGA2Oklahoma: 0 filingsOKSouth Carolina: 42 filingsSC42Arkansas: 0 filingsARMissouri: 1 filingMO1Indiana: 0 filingsINLouisiana: 1 filingLA1Ohio: 2 filingsOH2Wisconsin: 1 filingWI1Texas: 5 filingsTX5Kentucky: 0 filingsKYIowa: 1 filingIA1Kansas: 3 filingsKS3Mississippi: 3 filingsMS3North Carolina: 0 filingsNCNebraska: 1 filingNE1South Dakota: 2 filingsSD2Montana: 1 filingMT1New Hampshire: 0 filingsNHVirginia: 0 filingsVAArizona: 0 filingsAZPennsylvania: 1 filingPA1Rhode Island: 1 filingRI1Michigan: 1 filingMI1Alaska: 0 filingsAKDistrict of Columbia: 0 filingsDCIdaho: 2 filingsID2Maryland: 3 filingsMD3West Virginia: 1 filingWV1Utah: 1 filingUT1Wyoming: 5 filingsWY5Delaware: 0 filingsDENew Mexico: 1 filingNM1Colorado: 123 filingsCO123Connecticut: 0 filingsCTMaine: 1 filingME1North Dakota: 1 filingND1Illinois: 12 filingsIL12Minnesota: 0 filingsMNNew Jersey: 2 filingsNJ2New York: 0 filingsNYMassachusetts: 1 filingMA1Washington: 10 filingsWA10Oregon: 5 filingsOR5Vermont: 1 filingVT1California: 32 filingsCA32Nevada: 2 filingsNV2Hawaii: 0 filingsHI
FewerMore filingsNone

Often filed with

Standard-style form numbers that appear in the same filings most often.

  • CA 99 44Loss Payable Clause242 filings
  • CA 20 48Designated Insured for Covered Autos Liability Coverage239 filings
  • CA 99 23Rental Reimbursement Coverage225 filings
  • CA 99 47Employee as Lessor225 filings
  • CA 99 16Hired Autos Specified as Covered Autos You Own224 filings
  • CA 00 01Business Auto Coverage Form220 filings
  • CA 99 33Employees as Insureds219 filings
  • CA 04 44Waiver of Transfer of Rights of Recovery Against Others to Us (Waiver of Subrogation)218 filings
  • CA 99 54Covered Auto Designation Symbol214 filings
  • IL 00 21Nuclear Energy Liability Exclusion Endorsement (Broad Form)214 filings

Recent filings

Latest filings that include this form number. Filed copies open in FilingFocus.

SubmittedCompanyStateEditionsTracking number
Oct 16, 2026MIC General Insurance CorporationNJ10 13GMMX-135128490
Oct 14, 2026Century-National Insurance CompanyGA10 13GMMX-135119885
Sep 4, 2026Incline Casualty CompanySC10 13AIAD-135047572
Sep 1, 2026MIC General Insurance CorporationNV10 13GMMX-135075522
Aug 28, 2026Jet Insurance CompanySC10 13MRTN-134878222
Jul 9, 2026GEICO County Mutual Insurance CompanyTX10 13GECC-135011334
Jul 8, 2026Colorado Farm Bureau Insurance CompanyCO10 13SFBC-135011078
Jul 6, 2026GEICO Advantage Insurance Companyand 7 moreCO10 13GECC-135002717
Jun 30, 2026Accredited Surety and Casualty Company, Inc.CO10 13ACSA-135005169
Jun 26, 2026Grange Insurance AssociationCO10 13GRIA-135000193
Jun 25, 2026Selective Insurance Company of Americaand 3 moreCO10 13SELC-134998854
Jun 24, 2026Great American Alliance Insurance Companyand 3 moreCO10 13GACX-134993563

Most filed ISO CA forms

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