The employer shall file a first report of notice of injury with the organization within seven days from the date the employer receives the notice of injury from the employee. Failure of the employer to file a first report of notice of injury is an admission by the employer that the alleged injury may be compensable. The organization may make or reopen a determination made without an employer’s first report of notice of injury on its own motion pursuant to section 65-05-04 on the grounds determined by the organization to be sufficient.