Liberty Mutual Insurance

Also known as Liberty Mutual
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Contact Information
Name
Liberty Mutual Insurance
Type
Insurance
daisyBill Payer ID
db80958
Hours of Operation
06:00 AM - 08:00 PM EDT
Telephone Numbers
Main
(800) 362-0000
Claim Inquiries
(800) 362-0000 x 1,1,3
Main
(800) 362-0000
Claim Inquiries
(800) 362-0000 x 1,1,3
Bill Review
Liberty Mutual Bill Review
(800) 500-7044
CA Medical Provider Networks (MPNs)
Company Website

Liberty Mutual NATIONAL DATA

2,443
Provider Count
19,687
Injury Count
101,153
Bill Count
96%
e-Bill %
1%
Duplicate Bill %
7
Avg Days To Pay

Liberty Mutual CALIFORNIA DATA - EDI COMPLIANCE

Since October 2012, California law has mandated that claims administrators accept electronic medical bills (e-bills) and adhere to specific timeframes established by the Division of Workers’ Compensation (DWC) Medical Billing and Payment Guide. These timeframes govern the following Electronic Data Interchange (EDI) transactions:

  • 837 (e-bill) Receipt: The provider's initial submission of the electronic medical bill and subsequent Second Review appeals.

  • 277 Acknowledgement (ACK) Receipt: An electronic confirmation from the claims administrator indicating that the e-bill has been received and whether it has been accepted or rejected.​

  • 835 Explanation of Review (EOR) Receipt: A detailed electronic response from the claims administrator outlining the adjudication results of the e-bill, including payment details or reasons for denial.

By tracking this EDI data, daisyBill helps providers identify trends, resolve billing discrepancies, and maintain transparency in the workers’ comp electronic billing process.

837 e-Bill Sent

California law requires Liberty Mutual to accept workers’ comp e-bills and Second Review appeals submitted electronically by providers. daisyBill transmits all bills and appeals using the X12 837 EDI standard, as mandated by DWC Rule 7.1.

When Liberty Mutual fails to accept e-bills compliantly, daisyBill resorts to non-EDI methods (fax, email, or mail) to submit paper bills for processing.

The table below shows how often Liberty Mutual properly accepts e-bills sent via the required X12 837 EDI standard and how often Liberty Mutual's failure forces providers to submit paper bills.

99%
X837 Stats
X12 837 EDI
Original Bill
Second Review Appeal
Total
X12 837 EDI Compliant
837 Sent
59,116
99%
5,642
98%
64,758
99%
Yes
837 Not Accepted
306
1%
92
2%
398
1%
No

277 Acknowledgement (ACK) - Timeliness

California requires Liberty Mutual to electronically send a 277 Acknowledgement (277 ACK) to the provider within two working days of receiving an e-bill. This notice confirms whether Liberty Mutual accepted or rejected the e-bill for payment adjudication. If the 277 ACK indicates acceptance, it serves as proof that Liberty Mutual received the e-bill for processing.

The table below shows how often Liberty Mutual sends 277 ACK notices to daisyBill clients within the required two working days after receiving an e-bill.

100%
X277 Stats
X12 277 ACK Receipt
Original Bill
Second Review Appeal
Total
X12 277 Timeliness Compliant
277 Receipt Timely - 2 Working Days
59,115
100%
5,642
100%
64,757
100%
Yes
277 Receipt - 3+ Working Days
1
0%
0
0%
1
0%
No

277 Acknowledgement - Erroneous e-Bill Rejections

daisyBill tracks the following criteria from Liberty Mutual 277 Acknowledgement (277 ACK) responses to e-bills:

  • 277 Accept: Confirms that the e-bill was accepted for payment adjudication.

  • 277 Reject: Indicates that the e-bill was rejected, with an associated STC Category and STC Code explaining the reason.

  • STC Invalid – Reject Second Review: An improper rejection of a Second Review appeal using invalid STC Category and/or STC Code.

  • STC Invalid – Reject Injury Claim Valid: An incorrect rejection of an e-bill where the claims administrator previously paid another bill associated with the same injury claim.

  • STC Invalid – Reject Category/Code: A rejection where the STC Category and/or STC Code provided is invalid or not allowed.

  • STC Invalid – Reject Prior Accept: An incorrect rejection of an e-bill that was previously accepted via an earlier 277 ACK.

These criteria provide detailed insight into how often Liberty Mutual appropriately processes or improperly rejects e-bills and appeals.

96%
X277 Stc Stats
277 ACK STC Code
Original Bill
Second Review Appeal
Total
X12 277 STC Compliant
277 ACK Accept
56,932
96%
5,531
98%
62,463
96%
Yes
277 ACK Reject
2
0%
0
0%
2
0%
Yes
277 Reject Error - Invalid STC Category/Code
41
0%
0
0%
41
0%
No
277 Reject Error - Valid Injury Claim
970
2%
0
0%
970
1%
No
277 Reject Error - Prior ACK Accept Sent
1,171
2%
0
0%
1,171
2%
No
277 Reject Error - Improper Second Review / Appeal Rejection
0
0%
111
2%
111
0%
No

835 Explanation of Review (EOR) Receipt

An electronic Explanation of Review (EOR) is transmitted using the X12 835 EDI standard and provides details on the adjudication of an e-bill. DWC Rule 7.1 requires Liberty Mutual to electronically send an Explanation of Review (EOR) to the provider using the X12 835 EDI standard.

  • For Original e-Bills, Liberty Mutual must electronically send the EOR within 15 working days after receiving the e-bill.

  • For Second Review Appeals, Liberty Mutual must electronically send the EOR within 14 calendar days after receiving the Second Review e-bill.

The table below shows how often Liberty Mutual sends X12 835 EORs to daisyBill clients within the required timeframes.

88%
X835 Stats
X12 835 Receipt
Original Bill
Second Review Appeal
Total
X12 835 Compliant
835 Posted
51,486
90%
3,244
59%
54,730
88%
Yes
835 Balance Errors - Posted
310
1%
15
0%
325
1%
No
835 Late Receipt - Posted
162
0%
401
7%
563
1%
No
835 Missing
4,942
9%
1,852
33%
6,794
11%
No
835 Invalid - Unpostable
32
0%
19
0%
51
0%
No

Liberty Mutual CALIFORNIA DATA - REIMBURSEMENT STATISTICS

CA Average Days to Pay

For each bill sent from daisyBill software to Liberty Mutual, our technology tracks the count of business days it took Liberty Mutual to process the bill.

For the listed California workers’ comp fee schedules, this table reflects the average count of business days from Liberty Mutual’s receipt of a bill until the daisyBill client received an explanation of review (EOR) and payment from Liberty Mutual.

* California requires claims administrators to pay e-bills for medical treatment within 15 working days of receipt of the e-bill.

California Workers' Comp Fee Schedule
Average Days to Pay
Medical *
7.2
Interpreter
7.2
Copy Service
6.3
Medical-Legal
7.0
Facility *
8.7
Pharmacy *
4.9

CA Official Medical Fee Schedule

The California Official Medical Fee Schedule (OMFS) establishes the reimbursement amounts due to providers for medical treatment furnished to injured workers. However, rather than reimbursing providers the reimbursement amounts due per the OMFS, Liberty Mutual uses Preferred Provider Organizations (PPOs) to reduce the reimbursements paid to providers.

For Liberty Mutual medical treatment bills, this table reflects the OMFS Reimbursement Due to daisyBill clients for medical treatment provided to injured workers. Liberty Mutual Reimbursement Reduction reflects the amount Liberty Mutual failed to pay daisyBill clients. The Liberty Mutual Reduced Reimbursement reflects the reimbursement amount Liberty Mutual ultimately reimbursed daisyBill providers.

85%
Official Medical Fee Schedule (OMFS)
OMFS Reimbursement Due
$11,854,691
100.0%
Liberty Mutual Reimbursement Reduction
$1,752,417
14.8%
Liberty Mutual Reduced Reimbursement
$10,102,273
85.2%

Liberty Mutual CALIFORNIA DATA - PENALTY & INTEREST

If Liberty Mutual fails to remit payment within mandated time frames, California law requires the claims administrator to “self-execute” Penalty and Interest payments directly to the provider. Often claims administrators fail to self-execute these Penalities and Interest (P&I).

Using e-billing data, daisyBill calculates the Total P&I Due to daisyBill clients and the amount of P&I Liberty Mutual reported paying our clients.

The Penalty & Interest Balance Due displayed here is the amount Liberty Mutual failed to self-execute to daisyBill clients as mandated by California law.

$916,280
Penalty and Interest Balance Due
Total Penalty & Interest Due*
$946,430
Self-Executed Penalty & Interest Paid
$30,151
Penalty & Interest Balance Due
$916,280
Bill Transmission Year
Bill Count
EOR Receipt Count
EOR Missing Count*
Payment Late Count
Penalty Due
Interest Due
Total P&I Due
2019
40,185
38,438
96%
1,747
4%
2,873
7%
$73,393
$24,105
$97,498
2020
45,016
43,297
96%
1,719
4%
3,568
8%
$89,277
$36,953
$126,230
2021
55,327
53,585
97%
1,742
3%
4,175
8%
$131,077
$56,546
$187,624
2022
56,835
53,988
95%
2,847
5%
3,152
6%
$119,151
$49,633
$168,784
2023
64,792
62,130
96%
2,662
4%
2,386
4%
$105,189
$41,748
$146,936
2024
77,715
74,450
96%
3,265
4%
5,191
7%
$139,646
$26,203
$165,849
2025
39,267
37,565
96%
1,702
4%
1,773
5%
$47,414
$6,096
$53,510
Total
379,137
363,453
96%
15,684
4%
23,118
6%
$705,146
$241,285
$946,430

Once a bill payment is 45 calendar days overdue, daisyBill calculates Penalty and Interest amounts owed. Total P&I Due may slightly overstate the amount owed by Liberty Mutual in the instances where the underlying employer is a government employer, as California allows government employers 60 calendar days to timely reimburse workers' comp bills.

*EOR Missing Count reflects the instances where Liberty Mutual failed to electronically send the provider an EOR, therefore, daisyBill could not calculate whether P&I is due for these e-bills where the EOR is missing. Data updates daily.

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