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In December 2017, World Health Organization(WHO) classified gaming disorder as a mental disease. It published International Classification of Diseases (ICD) 11th revised edition (ICD-11).

In ICD-11 beta draft, gaming disorder is categorized as "Mental, behavioural or neurodevelopmental disorders, Disorders due to substance use or addictive behaviours, Disorders due to addictive Gaming disorder. This draft will be sent to World Health Assembly (WHA) and will receive sanction. Through this, gaming disorder is defined as impaired control, increasing priority given to gaming to the extent that gaming takes precedence over other life interests and daily activities and continuation or escalation of gaming despite the occurrence of negative consequences.

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Game industry insiders and many scholar denounces have an announcement for various reasons. One is that its judgment criteria is too vague to diagnose. In ICD-11, gaming disorder is diagnosed through at least twelve months. If symptom is serious or diagnostic requirements are met, it can be shortened. The problem is definition is too vague to classify the man between the enthusiastic gamer and game addiction. Also, many experts concern that non-patients could be prompt as gaming disorder patients, so many non-patients may be marked as game addiction and generate unnecessary medical costs. Also, International Gaming Research Unit's director and psychology professor said that we should focus on total game play time rather than the negative effect while playing the game. Also, the game industry said that the number of gamers who enjoy the contents of the game is over two billion and it is necessary to review the cultural content enjoyed by two billion people on a commonsensic-level basis to determine whether it is possible to categorize it as diseases.

▲ https://www.allphysicianjobs.com/blog/2018/02/16/treating-internet-gaming-disorder/

Last December, WHO reported that gaming disorder should be in mental disorder, and many game industry insiders and experts said that it is too early to define as disease.