L40 Psoriasis

L40.0 Psoriasis vulgaris

Incl.:

Nummular psoriasis

Plaque psoriasis

L40.1 Generalized pustular psoriasis

Incl.:

Impetigo herpetiformis

Von Zumbusch disease

L40.2 Acrodermatitis continua

L40.3 Pustulosis palmaris et plantaris

L40.4 Guttate psoriasis

L40.5† Arthropathic psoriasis (M07.0-M07.3*, M09.0*)

L40.8 Other psoriasis

Incl.:

Flexural psoriasis

L40.9 Psoriasis, unspecified

L41 Parapsoriasis

Excl.:

poikiloderma vasculare atrophicans ( L94.5)

L41.0 Pityriasis lichenoides et varioliformis acuta

Incl.:

Mucha-Habermann disease

L41.1 Pityriasis lichenoides chronica

L41.3 Small plaque parapsoriasis

L41.4 Large plaque parapsoriasis

L41.5 Retiform parapsoriasis

L41.8 Other parapsoriasis

L41.9 Parapsoriasis, unspecified

L42 Pityriasis rosea

L43 Lichen planus

Excl.:

lichen planopilaris ( L66.1)

L43.0 Hypertrophic lichen planus

L43.1 Bullous lichen planus

L43.2 Lichenoid drug reaction

Coding-Hint

Use additional external cause code (Chapter XX), if desired, to identify drug.

L43.3 Subacute (active) lichen planus

Incl.:

Lichen planus tropicus

L43.8 Other lichen planus

L43.9 Lichen planus, unspecified

L44 Other papulosquamous disorders

L44.0 Pityriasis rubra pilaris

L44.1 Lichen nitidus

L44.2 Lichen striatus

L44.3 Lichen ruber moniliformis

L44.4 Infantile papular acrodermatitis [Giannotti-Crosti]

L44.8 Other specified papulosquamous disorders

L44.9 Papulosquamous disorder, unspecified

L45* Papulosquamous disorders in diseases classified elsewhere