Requires health care providers licensed under Title 18 RCW (businesses and professions) or health care facilities licensed under Title 70 RCW (public health and safety), upon request of a patient, to provide an estimate of fees and charges related to a specific service, visit, or stay, and information regarding other types of fees or charges a patient may receive in conjunction with their visit to the provider or facility.

Requires health care providers, health care facilities, and hospitals to post a sign in patient registration areas informing patients of the availability of information on their estimated charges.