A judge ruled Monday that online travel sites such as Expedia do not owe the city of Anaheim $21 million in hotel taxes for rooms booked over the Internet, the first ruling of its kind in California on an issue that has bubbled up in cities across the country.

In her ruling, Los Angeles Superior Court Judge Carolyn Kuhl set aside last year's decision by a city hearing officer that the travel booking sites owed $21.3 million to Anaheim in back hotel taxes.

The city is reviewing its options, spokeswoman Marty DeSollar said in an e-mailed statement.

A coalition of the online travel sites, including Priceline, Expedia Inc., Orbitz, Hotwire, Hotels.com and Trip Network Inc., filed papers asking to overturn the hearing officer's ruling.

Such disputes are increasingly common between online travel companies and tourist-dependent cities.

Lawsuits or complaints have been filed around the country by cities or customers, including in Georgia, Maryland, Texas, New York, Illinois, Pennsylvania and in the California cities of San Diego and San Francisco.