The World Health Organization (WHO) lists ego-dystonic sexual orientation in the ICD-10, as a disorder of sexual development and orientation. The WHO diagnosis covers when gender identity or sexual orientation is clear, yet a patient has another behavioural or psychological disorder which makes that patient want to change it. F66.1 The diagnostic manual notes that a sexual orientation is not a disorder in itself.
The diagnostic category of "ego-dystonic homosexuality" was removed from the American Psychiatric Association's DSM in 1987 (with the publication of the DSM-III-R), but still potentially remains in the DSM-IV under the category of "sexual disorder not otherwise specified" including "persistent and marked distress about one’s sexual orientation”.
The Medical Council of India uses the WHO classification of ego-dystonic sexual orientation. The Chinese Classification and Diagnostic Criteria of Mental Disorders includes ego-dystonic homosexuality. The American Psychological Association has officially opposed the category of ego-dystonic homosexuality since 1987.
Read more about this topic: Ego-dystonic Sexual Orientation