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REVENUE RECOGNITION (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The approximate percentage of net revenues by type of payer customer was as follows:
| Year Ended December 31, |  |
| 2023 |  | 2022 |  | 2021 |  |
Healthcare insurers: |  |  |  |  |  |  |
Fee-for-service | 37 | % |  | 38 | % |  | 39 | % |  |
Capitated | 3 |  |  | 3 |  |  | 3 |  |  |
Total healthcare insurers | 40 |  |  | 41 |  |  | 42 |  |  |
Government payers | 11 |  |  | 11 |  |  | 10 |  |  |
Client payers | 34 |  |  | 33 |  |  | 33 |  |  |
Patients (including coinsurance and deductible responsibilities) | 12 |  |  | 12 |  |  | 12 |  |  |
Total DIS | 97 |  |  | 97 |  |  | 97 |  |  |
DS | 3 |  |  | 3 |  |  | 3 |  |  |
Net revenues | 100 | % |  | 100 | % |  | 100 | % |  |
Accounts Receivable Disaggregation | The approximate percentage of net accounts receivable by type of payer customer as of December 31, 2023 and 2022 was as follows:
| 2023 |  | 2022
Healthcare insurers | 24% |  | 28%
Government payers | 7 |  | 6
Client payers | 45 |  | 44
Patients (including coinsurance and deductible responsibilities) | 20 |  | 18
Total DIS | 96 |  | 96
DS | 4 |  | 4
Net accounts receivable | 100% |  | 100%
Accounts Receivable, Allowance for Credit Loss | The following table summarizes the activity for the Company's allowance for credit losses during the years ended December 31, 2023 and 2022, which principally relates to client payers:
| Allowance for Credit Losses |  |
Balance, December 31, 2021 | $ | 31 |  |  |
Provision for credit losses | 3 |  |
Write-offs of accounts receivable, net of recoveries | (4) |  |  |
Balance, December 31, 2022 | 30 |  |  |
Provision for credit losses | 1 |  |  |
Write-offs of accounts receivable, net of recoveries | (4) |  |  |
Balance, December 31, 2023 | $ | 27 |  |  |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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