Generally, invoices are not required for workers' comp DMEPOS bills.
If a provider dispenses DMEPOS and the DMEPOS is included in the fee schedule with a reimbursement amount, payment is not dependent on an invoice EXCEPT when an invoice is required by statute.
Per section 3.0 of the Medical Billing and Payment Guide:
Statute 5307.1 requires proof of documented paid costs only for DMEPOS that meets the definition of a dangerous device as defined by California Business and Professions Code Section 4022.
California Labor Codes
Division of Workers’ Compensation Websites
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