City of Los Angeles (CA)

Also known as Los Angeles City
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Contact Information
Name
City of Los Angeles (CA)
Type
Employer
daisyBill Payer ID
db77292
Hours of Operation
08:00 AM - 05:00 PM PDT
Telephone Numbers
Main
(213) 473-3400
Claim Inquiries
(213) 473-3400 x 8
Main
(213) 473-3400
Claim Inquiries
(213) 473-3400 x 8
Bill Review
Medata Service Bureau
(800) 854-7591 x 1
CA Medical Provider Networks (MPNs)
Company Website

Los Angeles City NATIONAL DATA

358
Provider Count
2,253
Injury Count
11,285
Bill Count
98%
e-Bill %
1%
Duplicate Bill %
6
Avg Days To Pay

Los Angeles City NATIONAL EDI GRADE

For all electronic bills (e-bills) submitted to workers’ compensation payers (also known as claims administrators), daisyBill monitors the Electronic Data Interchange (EDI) transactions to evaluate each payer’s EDI performance.

When a payer fails to process e-bills properly, providers face avoidable administrative burdens—undermining the efficiencies that e-billing is designed to achieve and making it harder to care for injured workers.

The EDI Grade reflects a payer’s compliance across four EDI components: 837, 277, 277 STC, and 835. Each component is weighted based on the level of administrative work required when the payer fails to meet EDI standards. These weighted scores are combined to calculate the overall EDI Grade, as shown in the table.

A-
92%
EDI Grade
Grade Weight
15%
5%
5%
75%
EDI Grade
A+
100%
A+
100%
A+
100%
B+
90%
A-
92%

Los Angeles City NATIONAL EDI DATA

To support claims administrators in improving EDI compliance, daisyBill tracks key EDI benchmarks that reveal where protocol breakdowns are creating administrative burdens for workers’ comp providers:

  • 837 Sent: Measures the volume and percentage of electronic bills (837s) submitted by providers to the claims administrator.

  • 277 Acknowledgment (ACK) Receipt: Assesses whether the claims administrator sends timely and accurate electronic acknowledgments confirming receipt of e-bills—and whether those bills are correctly accepted or rejected.

  • 835 Explanation of Benefits (EOB) Receipt: Evaluates whether the claims administrator delivers accurate and detailed electronic adjudication responses, including payment information or denial explanations.

By monitoring this data, daisyBill enables claims administrators to pinpoint breakdowns in their EDI processes that result in unnecessary friction for providers, ultimately helping improve billing efficiency and provider satisfaction.

837 e-Bill Sent

daisyBill transmits workers’ compensation e-bills and appeals to Los Angeles City using the X12 837 Electronic Data Interchange (EDI) standard.

When Los Angeles City fails to accept these e-bills, daisyBill resorts to non-EDI methods—such as fax, email, or mail—to submit paper bills for processing.

The table below displays the frequency with which Los Angeles City accepts e-bills sent via the X12 837 EDI standard, as well as the frequency of paper bills submitted due to Los Angeles City’s failure to accept providers’ e-bills.

A+
100%
837 Sent (e-Bill)
X12 837 EDI
Original Bill
Second Review Appeal
Total
837 Sent
8,737
100%
1,515
100%
10,252
100%
837 Not Accepted
16
0%
0
0%
16
0%

277 Acknowledgement (ACK) - Timeliness

When Los Angeles City receives an e-bill, it is expected to return a 277 Acknowledgment (277 ACK) to the provider. This electronic response confirms whether the bill was:

  • Accepted for adjudication (processing), or

  • Rejected due to formatting, validation, or other submission errors.

The 277 ACK is a critical part of the EDI workflow, as it verifies that the e-bill was received and passed initial validation.

The table shows how often Los Angeles City sends 277 ACKs to daisyBill clients within two working days, after three or more working days, or fails to send them at all.

A+
100%
277 Timely Receipt
X12 277 ACK Receipt
Original Bill
Second Review Appeal
Total
277 Receipt Timely - 2 Working Days
8,733
100%
1,515
100%
10,248
100%
277 Receipt - 3+ Working Days
4
0%
0
0%
4
0%

277 Acknowledgement - Erroneous e-Bill Rejections

daisyBill monitors and evaluates Los Angeles City’s 277 Acknowledgment (277 ACK) responses to e-bills based on the following criteria:

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

  • 277 ACK Reject: Indicates that the e-bill was rejected, accompanied by an STC Category and STC Code that explain the reason for the rejection.

  • 277 Reject Error – Invalid STC Category/Code: The rejection includes an STC Category and/or STC Code that is either invalid or not permitted under the standard.

  • 277 Reject Error – Valid Injury Claim: daisyBill aggregated payment data indicates that the e-bill was incorrectly rejected because the claims administrator previously processed and paid another bill linked to the same injury claim.

  • 277 Reject Error – Prior ACK Accept Sent: The e-bill was incorrectly rejected because the claims administrator previously sent a 277 ACK accepting the e-bill.

  • 277 Reject Error – Improper Appeal Rejection: An appeal request was incorrectly rejected.

These 277 ACK criteria provide critical insight into the accuracy and reliability of Los Angeles City’s e-bill processing, highlighting both proper handling and improper rejections of e-bills and appeals.

A+
100%
277 Accept / Reject
277 ACK STC Code
Original Bill
Second Review Appeal
Total
277 ACK Accept
8,688
99%
1,513
100%
10,201
100%
277 Reject Error - Invalid STC Category/Code
2
0%
0
0%
2
0%
277 Reject Error - Valid Injury Claim
18
0%
0
0%
18
0%
277 Reject Error - Prior ACK Accept Sent
29
0%
0
0%
29
0%
277 Reject Error - Improper Second Review / Appeal Rejection
0
0%
2
0%
2
0%

835 Explanation of Benefits (EOB) Receipt

The electronic Explanation of Benefits (EOB), transmitted using the X12 835 EDI standard, provides detailed information about the adjudication of an e-bill and can be automatically posted to the corresponding e-bill. This EOB includes data on payments made, adjustments applied, or reasons for denial of billed services.

daisyBill tracks the following metrics related to 835 EOBs sent by Los Angeles City:

  • 835 Posted: Confirms that an electronic EOB was received electronically and successfully posted to the e-bill.

  • 835 Balance Errors – Posted: Indicates that the posted electronic EOB contained payment balance discrepancies.

  • 835 Late Receipt – Posted: Indicates that the electronic EOB was received after the regulatory payment timeframe had elapsed.

  • 835 Missing: No electronic EOB was received after submission of the e-bill.

  • 835 Invalid – Unpostable: Identifies instances where the electronic EOB contained incorrect or incomplete information, preventing it from being posted.

The table below presents an analysis of Los Angeles City’s electronic (835) EOB responses based on these criteria.

B+
90%
835 Posted (EOR/EOB)
X12 835 Receipt
Original Bill
Second Review Appeal
Total
Grade Impact
835 Posted
8,310
96%
617
41%
8,927
88%
Full Credit
835 Balance Errors - Posted
29
0%
1
0%
30
0%
25% Partial Credit
835 Late Receipt - Posted
205
2%
287
19%
492
5%
50% Partial Credit
835 Missing
142
2%
75
5%
217
2%
835 Invalid - Unpostable
2
0%
533
35%
535
5%

Los Angeles City CALIFORNIA DATA - REIMBURSEMENT STATISTICS

CA Average Days to Pay

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

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

* 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 *
6.5
Medical-Legal
8.4
Copy Service
4.8
Facility *
10.5
Interpreter
8.8
Pharmacy *
13.3

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, Los Angeles City uses Preferred Provider Organizations (PPOs) to reduce the reimbursements paid to providers.

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

81%
Official Medical Fee Schedule (OMFS)
OMFS Reimbursement Due
$1,793,371
100.0%
Los Angeles City Reimbursement Reduction
$336,816
18.8%
Los Angeles City Reduced Reimbursement
$1,456,555
81.2%

Los Angeles City CALIFORNIA DATA - PENALTY & INTEREST

If Los Angeles City 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 Los Angeles City reported paying our clients.

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

$87,520
Penalty and Interest Balance Due
Total Penalty & Interest Due*
$87,520
Self-Executed Penalty & Interest Paid
$0
Penalty & Interest Balance Due
$87,520
Bill Transmission Year
Bill Count
EOR Receipt Count
EOR Missing Count*
Payment Late Count
Penalty Due
Interest Due
Total P&I Due
2019
7,747
5,694
73%
2,053
27%
406
7%
$10,827
$2,469
$13,296
2020
7,242
6,214
86%
1,028
14%
617
10%
$10,969
$3,426
$14,395
2021
7,008
6,698
96%
310
4%
367
5%
$9,368
$1,968
$11,336
2022
7,586
7,011
92%
575
8%
370
5%
$9,623
$2,583
$12,206
2023
8,627
8,207
95%
420
5%
332
4%
$10,103
$4,325
$14,428
2024
10,226
9,940
97%
286
3%
447
4%
$10,668
$2,904
$13,572
2025
6,216
5,811
93%
405
7%
248
4%
$7,082
$1,205
$8,286
Total
54,652
49,575
91%
5,077
9%
2,787
6%
$68,641
$18,879
$87,520

Although daisyBill makes every effort to ensure our information is accurate, we assume no responsibility or liability for any errors or omissions in the content of this site, directory, or blog. The information contained in this site is provided on an "as is" basis with no guarantees of completeness, accuracy, usefulness or timeliness. All data on this website is subject to change without notice to improve function, reliability, design, or otherwise. Visitors to this website should take all steps necessary to ascertain that information you receive from this website is correct and has been verified.