A new timely filing rule took effect (for dates of service on or after) 7/1/2022.   The Department of Labor and Industry (DLI) added the rule under the Administrative Rules of Montana (ARM) 24.29.1402(1)(c):

(c)A provider of medical treatment or services shall only be paid for services under this chapter if the bill for medical treatment or services is timely received by the employer or appropriate payer.  Absent a showing of good cause, a bill for treatment or services is timely received by the employer or appropriate payer when it is actually received within 365 days of the later of:

• The date of service; or
• The date the provider of medical treatment or services knew the treatment or services was related to a claim for benefits under this chapter.

The rule can be found at:  https://rules.mt.gov/gateway/ruleno.asp?RN=24%2E29%2E1402.  For more information contact DLI’s Celeste Ackerman at 406-444-6604.