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This is a shortened version of the twelfth chapter of the ICD-9: Diseases of the Skin and Subcutaneous Tissue. It covers ICD codes 680 to 709. The full chapter can be found on pages 379 to 393 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis. Like liver spots , seborrheic keratoses are seen more often as people age.
[9] [15] In certain instances, there is a perivascular infiltration of spindle-shaped and mononuclear cells, as well as an increased density of collagen fibers and fibroblasts. [ 13 ] [ 11 ] Acanthosis , basket weave hyperkeratosis , elevated basal pigmentation, and obliteration with focal rete ridge extension are observed in the epidermis . [ 8 ]
[9]: 667, 764 [10]: 644 Generalized eruptive keratoacanthoma (also known as "Generalized eruptive keratoacanthoma of Grzybowski") is a cutaneous condition, a variant of keratoacanthomas, characterized by hundreds to thousands of tiny follicular keratotic papules over the entire body.
Seborrhoeic dermatitis (also spelt seborrheic dermatitis in American English) is a long-term skin disorder. [4] Symptoms include flaky, scaly, greasy, and occasionally itchy and inflamed skin. [2] [3] Areas of the skin rich in oil-producing glands are often affected including the scalp, face, and chest. [4]
[9] Epidermolytic hyperkeratosis on over 50% of the epidermolytic acanthoma surface is the main histologic characteristic of the condition. [ 10 ] [ 11 ] Keratinocytes with coarse keratohyalin granules, reticular degeneration, perinuclear vacuolation, and perinuclear eosinophilic inclusions in the granular and spinous layers are characteristics ...
Inflammatory Linear Verrucous Epidermal Nevus is a rare disease of the skin that presents as multiple, discrete, red papules that tend to coalesce into linear plaques that follow the Lines of Blaschko.
Clear cell acanthoma (also known as Acanthome cellules claires of Degos and Civatte, Degos acanthoma, and Pale cell acanthoma) is a benign clinical and histological lesion initially described as neoplastic, which some authors now regard as a reactive dermatosis.