2006 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.* > 2006 ICD-9-CM Diagnosis 528.2 Oral aphthae View the most recent version of ICD-9-CM 528.2 A recurrent disease of the oral mucosa of unknown etiology. It is characterized by small white ulcerative lesions, single or multiple, round or oval. Two to eight crops of lesions occur per year, lasting for 7 to 14 days and then heal without scarring. 528.2 is a specific code that can be used to specify a diagnosis 528.2 contains 12 index entries View the ICD-9-CM Volume 1 528.* hierarchy Alternate Terminology Aphthous stomatitis Canker sore Periadenitis mucosa necrotica recurrens Recurrent aphthous ulcer Stomatitis herpetiformis 528.2 Excludes herpetic stomatitis (054.2)  Index entries containing 528.2: Aphthae, aphthous - see also condition Bednar's 528.2 oral 528.2 stomatitis 528.2 ulcer (oral) (recurrent) 528.2 genital organ(s) NEC female male 608.89 larynx 478.79 Bednar's aphthae 528.2 Canker (mouth) (sore) 528.2 rash 034.1 Periadenitis mucosa necrotica recurrens 528.2 Sore mouth 528.9 canker 528.2 Stomatitis aphthous 528.2 herpetiformis 528.2 Ulcer, ulcerated, ulcerating, ulceration, ulcerative 707.9 aphthous (oral) (recurrent) 528.2 genital organ(s) female male 608.89 mouth 528.2