Coverage description
An Insurance Services Office (ISO) standard form. It excludes umbrella liability for injury or damage arising from the failure of computers, software, chips or other electronic equipment to correctly handle the year 2000 and beyond, and from related advice, testing or repair work. Covered auto liability is not affected.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 09 00Sep 2000Latest | 68 | 28 | 28 | May 2022 to Aug 2026 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 04 92.
What the filings show
- Edition in use: in the past 12 months, 9 companies filed the 09 00 edition.
- CU 21 42 (Exclusion – Exterior Insulation And Finish Systems) is filed alongside it most often, in 66 of the same filings (96%).
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 CU 21 18, out of 22 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 22 | 22 | 09 00 | Sep 30, 2025 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 6 | 3 | 09 00 | Aug 11, 2026 |
| Church Mutual GroupChurch Mutual Insurance Company, S.I. | 5 | 2 | 09 00 | Jun 26, 2026 |
| Nationwide Corporation Group2 group companies filed it, led by Crestbrook Insurance Company and Nationwide Agribusiness Insurance Company | 5 | 1 | 09 00 | Jun 30, 2026 |
| Sompo GroupSompo America Insurance Company | 5 | 1 | 09 00 | Jun 15, 2026 |
| James River GroupFalls Lake National Insurance Company | 4 | 4 | 09 00 | Jan 13, 2023 |
| AU Holding Company GroupContinental Indemnity Company | 3 | 3 | 09 00 | May 3, 2024 |
| American European Group2 group companies filed it, led by American European Insurance Company and Rutgers Casualty Ins Co | 2 | 2 | 09 00 | Apr 17, 2023 |
| American Family Insurance GroupMidvale Indemnity Company | 2 | 2 | 09 00 | Sep 28, 2023 |
| Mountain West Farm GroupMountain West Farm Bureau Mutual Insurance Company | 2 | 2 | 09 00 | Oct 16, 2023 |
How the largest insurers handle CU 21 18
Groups among the largest commercial umbrella and excess insurers that filed CU 21 18 or their own version in the past five years.
- Chubb Limited GroupUses CU 21 18 in 1 filing
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States
Number of filings that include CU 21 18 in each state, Oct 2021 to Aug 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CU 21 42Exclusion – Exterior Insulation And Finish Systems66 filings
- CU 21 19Exclusion - Year 2000 Computer-Related and Other Electronic Problems - Products Completed Operations65 filings
- CU 21 21Year 2000 Computer- Related and Other Electronic Problems – Exclusion of Specified Coverages For Designated Locations, Operations, Products or Services65 filings
- CU 00 01Commercial Liability Umbrella Coverage Form64 filings
- CU 22 01Exclusion – Property Entrusted60 filings
- CU 22 05Exclusion - Housing Projects Sites60 filings
- CU 22 13Exclusion – Underground Resources And Equipment60 filings
- CU 21 20Exclusion - Year 2000 Computer-Related and Other Electronic Problems - With Exception For Bodily Injury On Your Premises59 filings
- CU 22 08Exclusion – Saline Substances Contamination59 filings
- CU 22 24Exclusion – Telecommunication Equipment Or Service Providers Errors And Omissions59 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Aug 12, 2026 | Colonial Surety Company | SC | 09 00 | MRTN-134978915 |
| Aug 11, 2026 | Philadelphia Indemnity Insurance Company | SC | 09 00 | PHLX-135041545 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | 09 00 | NWPP-135003098 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 09 00 | CHMU-134995025 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 09 00 | UNFG-134979875 |
| Jun 15, 2026 | Sompo America Insurance Company | CO | 09 00 | SMPJ-134971280 |
| Jun 2, 2026 | Philadelphia Indemnity Insurance Company | IL | 09 00 | PHLX-134967828 |
| Jan 5, 2026 | Mississippi Farm Bureau Casualty Insurance Company | MS | 09 00 | SFBC-134775309 |
| Sep 30, 2025 | Insurance Services Office, Inc. | GA | 09 00 | ISOF-134687840 |
| Sep 16, 2025 | Insurance Services Office, Inc. | VT | 09 00 | ISOF-134664793 |
| Sep 15, 2025 | Insurance Services Office, Inc. | ME | 09 00 | ISOF-134664767 |
| Sep 15, 2025 | Insurance Services Office, Inc. | MD | 09 00 | ISOF-134664768 |
Most filed ISO CU forms
- CU 34 54 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CU 21 86 Exclusion – Access Or Disclosure Of Confidential Or Personal Material Or Information
- CU 00 05 Exclusion - Violation of Law Addressing Data Privacy
- CU 34 56 Exclusion – Cyber Incident
- CU DS 01 Commercial Liability Umbrella Declarations
- CU 21 88 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information (Coverage B Only)
- CU 34 44 Broad Abuse or Molestation Exclusion
- CU 34 55 Exclusion - Electronic Data - Deletion Of Bodily Injury Exception
- CU 22 37 Motor Carrier Endorsement
- CU 21 87 Exclusion - Access Or Disclosure Of Confidential Or Personal Information and Data-Related Liability - Limited Bodily Injury Exception Not Included
- CU 04 02 Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion
- CU 04 54 Loss of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage - Subject To Cyber Incident Exclusion - Deletion Of Bodily Injury Exception
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