California Petition Appealing Administrative Directors Independent Medical Review Determination is a process by which individuals can appeal decisions made by an Administrative Director's Independent Medical Review (MR) that denies, modifies, or delays medical treatment that has been recommended by a treating physician to an injured worker in California. The individual has the right to file a Petition for Reconsideration with the MR, which requests a reconsideration of the decision, or to appeal the decision to the Workers’ Compensation Appeals BoardCABAB). The petition must be filed within 30 days of the date of the decision. The different types of California Petition Appealing Administrative Directors Independent Medical Review Determination include: 1. Petition for Reconsideration: This is a request to the MR to reconsider a decision that denies, modifies, or delays medical treatment that has been recommended by a treating physician. 2. Petition for a Writ of Review: This is a request to the CAB for a review of a decision made by the MR that denies, modifies, or delays medical treatment that has been recommended by a treating physician. 3. Petition for a Writ of Mandate: This is a request to the CAB for a review of an MR decision that has been appealed to the CAB and denied or modified. 4. Petition for Judicial Review: This is a request to the Superior Court for a review of an MR decision that has been appealed to the CAB and denied or modified.