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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Skin And Subcutaneous Tissue 680-709 > Other Inflammatory Conditions Of Skin And Subcutaneous Tissue 690-698 > ICD-9-CM Diagnosis 697 Lichen 697 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 697.0 Lichen planus An inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. It is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. The lesions may be discrete or coalesce to form plaques. Histologically, there is a "saw-tooth" pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of T-cells. Etiology is unknown. 697.0 is a specific code that can be used to specify a diagnosis 697.0 contains 5 index entries ICD-9-CM Diagnosis 697.1 Lichen nitidus A chronic inflammatory disease characterized by shiny, flat-topped, usually flesh-colored micropapules no larger than the head of a pin. Lesions are localized in the early stages, found chiefly on the lower abdomen, penis, and inner surface of the thighs. Distribution may become generalized as the disease progresses. 697.1 is a specific code that can be used to specify a diagnosis 697.1 contains 3 index entries ICD-9-CM Diagnosis 697.8 Other lichen not elsewhere classified 697.8 is a specific code that can be used to specify a diagnosis 697.8 contains 5 index entries ICD-9-CM Diagnosis 697.9 Lichen unspecified 697.9 is a specific code that can be used to specify a diagnosis 697.9 contains 1 index entry