Papulosquamous disorders (L40-L45)

L40Psoriasis

L40.0Psoriasis vulgaris
› Nummular psoriasis
› Plaque psoriasis

L40.1Generalized pustular psoriasis
› Impetigo herpetiformis
› Von Zumbusch's disease

L40.2Acrodermatitis continua

L40.3Pustulosis palmaris et plantaris

L40.4Guttate psoriasis

L40.5Arthropathic psoriasis

L40.50Arthropathic psoriasis, unspecified

L40.51Distal interphalangeal psoriatic arthropathy

L40.52Psoriatic arthritis mutilans

L40.53Psoriatic spondylitis

L40.54Psoriatic juvenile arthropathy

L40.59Other psoriatic arthropathy

L40.8Other psoriasis
› Flexural psoriasis

L40.9Psoriasis, unspecified

L41Parapsoriasis
Excludes 1: poikiloderma vasculare atrophicans (L94.5)

L41.0Pityriasis lichenoides et varioliformis acuta
› Mucha-Habermann disease

L41.1Pityriasis lichenoides chronica

L41.3Small plaque parapsoriasis

L41.4Large plaque parapsoriasis

L41.5Retiform parapsoriasis

L41.8Other parapsoriasis

L41.9Parapsoriasis, unspecified

L42Pityriasis rosea

L43Lichen planus
Excludes 1: lichen planopilaris (L66.1)

L43.0Hypertrophic lichen planus

L43.1Bullous lichen planus

L43.2Lichenoid drug reaction
Use Additional Code: code for adverse effect, if applicable, to identify drug (T36-T50) with fifth or sixth character 5)

L43.3Subacute (active) lichen planus
› Lichen planus tropicus

L43.8Other lichen planus

L43.9Lichen planus, unspecified

L44Other papulosquamous disorders

L44.0Pityriasis rubra pilaris

L44.1Lichen nitidus

L44.2Lichen striatus

L44.3Lichen ruber moniliformis

L44.4Infantile papular acrodermatitis [Gianotti-Crosti]

L44.8Other specified papulosquamous disorders

L44.9Papulosquamous disorder, unspecified

L45Papulosquamous disorders in diseases classified elsewhere
Code First: underlying disease.