2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Diseases Of The Oral Soft Tissues Excluding Lesions Specific For Gingiva And Tongue 528.* > 2008 ICD-9-CM Diagnosis 528.6 Leukoplakia of oral mucosa including tongue  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 528.6 can be accessed here. A white patch or plaque on oral mucosa that cannot be characterized clinically or pathologically as any other disease. The diagnosis of leukoplakia is one of exclusion; other conditions such as candidiasis, lichen planus, leukoedema, etc. must be ruled out before a diagnosis of leukoplakia can be made. Leukoplakia may be a premalignant condition. --2004 A white patch seen on the oral mucosa. It is considered a premalignant condition and is often tobacco-induced. When evidence of Epstein-Barr virus is present, the condition is called hairy leukoplakia (LEUKOPLAKIA, HAIRY). 528.6 is a specific code that can be used to specify a diagnosis 528.6 contains 19 index entries View the ICD-9-CM Volume 1 528.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 528.6 also known as: Leukokeratosis of oral mucosa Leukoplakia of: gingiva lips tongue 528.6 excludes: carcinoma in situ (230.0, 232.0) leukokeratosis nicotina palati (528.79) Index entries containing 528.6: Ichthyosis (congenita) 757.1 lingual 528.6 Leukokeratosis (see also Leukoplakia) 702.8 mouth 528.6 tongue 528.6 Leukoplakia 702.8 buccal 528.6 gingiva 528.6 lip 528.6 mouth 528.6 oral soft tissue (including tongue) (mucosa) 528.6 palate 528.6 tongue 528.6 Lingua tylosis 528.6 Patches smokers' (mouth) 528.6 Plaque tongue 528.6 Psoriasis 696.1 buccal 528.6 mouth 528.6 Smokers' tongue 528.6 Tylosis 700 buccalis 528.6 linguae 528.6 White - see also condition patches of mouth 528.6