ICD-9-CM 696 OMIM 177900 DiseasesDB 10895 MedlinePlus 000434 eMedicine emerg/489 plaque derm/365 guttate derm/361 nails derm/363 pustular derm/366 MeSH D011565. edit on Wikidata. Psoriasis is a long-lasting autoimmune disease characterized by patches of abnormal skin. Chapter 2 – Neoplasms Note: Replaces ICD-9 Chapter 2 – Neoplasms (C00 – D49) Malignant neoplasms of lip, oral cavity and pharynx Note: Functional activity All neoplasms are classified in this chapter, whether they are functionally active or not. ( L40.1 ) Impetigo Includes: Impetigo contagiosa Impetigo vulgaris Impetigo-unspecified Includes: Impetigo NOS Non-bullous impetigo Bockhart’s impetigo Includes: Impetigo follicularis Perifolliculitis NOS Superficial pustular perifolliculitis Bullous impetigo Includes: Impetigo neonatorum Pemphigus neonatorum Other impetigo Includes: Ulcerative impetigo Impetiginization of other dermatoses RARE-data Solutions ICD-10 to ICD-9 Whitebook Page 12 – 3.