Effective October 1, 2015, the Puget Sound Workers’ Compensation Trust will be adopting ICD-10 codes to align with the Washington State Department of Labor & Industries and the Centers for Medicare and Medicaid Services.

How does this affect medical providers?

• You must code bills in ICD-10 for all dates of service on or after October 1, 2015.
• You must code bills in ICD-9 for all dates of service on or before September 30, 2015.
• If you bill with the incorrect ICD code, that bill will be denied.
• ICD-10s need to be on the Provider’s Initial Report (PIR) for dates of service on or after October 1, 2015.
• Medical records and chart notes will require a higher level of diagnostic detail than they did when using ICD-9.

Use the tables below to determine how these codes will be processed.

For General Billing:

For Inpatient Services:

If you have questions or concerns, please call us at 1-877-955-9675.

For additional information, you can also refer to L&I’s “10 Things Providers Need to Know About ICD-10 at L&I“.