Or. Admin. R. 436-008-0020 – Electronic Medical Bill Acknowledgements

(1) If the electronic submission does not conform to the standards adopted under OAR 436-008-0004(1), then the insurer must send an acknowledgment adopted under 436-008-0004(2)(a) or 436-008-0004(2)(b) to the health care provider. This acknowledgement must be sent within one day of receipt of the electronic bill unless the electronic submission lacks sufficient identifiers to create an acknowledgment.
(2) If the electronic submission does conform to a standard adopted under OAR 436-008-0004(1), then the insurer must send an acknowledgment adopted under 436-008-0004(2)(c) to the health care provider within two days.
(3) Any acknowledgment of a medical bill, as provided in (1) or (2) of this rule is not an admission of liability by the insurer.

ORS 656.252, 656.254 & 656.726(4)

ORS 656.252 & 656.254