4903.5.
(a) No lien claim for expenses as provided in subdivision (b) of Section 4903 may be filed after six months from the date on which the appeals board or a workers’ compensation administrative law judge issues a final decision, findings, order, including an order approving compromise and release, or award, on the merits of the claim, after five years from the date of the injury for which the services were provided, or after one year from the date the services were provided, whichever is later.(b) Notwithstanding subdivision (a), any health care provider, health care service plan, group disability insurer, employee benefit plan, or other entity providing medical benefits on a nonindustrial basis, may file a lien claim for
expenses as provided in subdivision (b) of Section 4903 within six months after the person or entity first has knowledge that an industrial injury is being claimed.
(c) The injured worker shall not be liable for any underlying obligation if a lien claim has not been filed and served within the allowable period. Except when the lien claimant is the applicant as provided in Section 5501, a lien claimant shall not file a declaration of readiness to proceed in any case until the case-in-chief has been resolved.
(d) Notwithstanding any other law, no lien claim for expenses incurred by or on behalf of the injured employee for medical and hospital treatment as provided in subdivision (b) of Section 4903 may be filed more than one year from the date the health care provider, or the
health care provider’s agent, was sent an explanation of benefits or explanation of review paying or
objecting to a bill in whole or in part a bill pursuant to the official medical fee schedule promulgated pursuant to Section 5307.1 or a preferred provider organization (PPO) agreement.
(1) This subdivision shall apply to all injuries, without regard to whether the injury occurs before, on, or after the operative date of this subdivision.
(2) This subdivision shall become operative on March 1, 2010.
(e) This section shall not apply to civil actions brought under the Cartwright Act (Chapter 2 (commencing with Section 16700) of Part 2 of Division 7 of the Business and Professions Code), the Unfair Practices Act (Chapter 4 (commencing with Section 17000) of Part 2 of Division 7 of the Business and
Professions Code), or the federal Racketeer Influenced and Corrupt Organization Act (Chapter 96 (commencing with Section 1961) of Title 18 of the United States Code) based on concerted action with other insurers that are not parties to the case in which the lien or claim is filed.