ICD-10 and 5010

10 Things Providers Need to Know About ICD-10

Find out what ICD-10 codes are authorized or denied on a claim by logging on to the Claim and Account Center (CAC) or by calling 1-360-902-6530. Please have the claim number ready.

Quick reference sheet for providers.

Impact of ICD-10

One of the most important parts of the workers’ compensation system claims process is diagnostic coding.  Effective October 1, 2015, Labor and Industries (L&I) implemented conversion from the International Classification of Diseases (ICD) codes to the updated ICD-10 codes. Although workers’ compensation is technically exempt, L&I converted to ICD-10 to align with industry standards. The appropriate reimbursement of our provider community remains a priority during this process.


Date Description
September 1, 2013 ICD-10 end-to-end testing with trading partners begins.
March 1, 2014 Department begins testing internal ICD to ICD-10 conversion process.
April 1, 2014 All department bills must be submitted in 5010 format.
July 1, 2014 Department makes the new CMS 1500 form available.
October 1, 2015 Compliance date for ICD-10 CM.

If you have questions regarding ICD-10, or want to schedule testing, contact the:

Electronic Billing Unit
Email: ebulni@lni.wa.gov
Phone: 360-902-6511

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