ICD-10-CM Book 2025 Edition

Chapters  /  Chapter 12  /  L40-L45

Papulosquamous disorders (L40-L45)

L40 Psoriasis
L40.0 Psoriasis vulgaris
Nummular psoriasis
Plaque psoriasis
L40.1 Generalized pustular psoriasis
Impetigo herpetiformis
Von Zumbusch's disease
L40.2 Acrodermatitis continua
L40.3 Pustulosis palmaris et plantaris
L40.4 Guttate psoriasis
L40.5 Arthropathic psoriasis
L40.50 Arthropathic psoriasis, unspecified
L40.51 Distal interphalangeal psoriatic arthropathy
L40.52 Psoriatic arthritis mutilans
L40.53 Psoriatic spondylitis
L40.54 Psoriatic juvenile arthropathy
L40.59 Other psoriatic arthropathy
L40.8 Other psoriasis
Flexural psoriasis
L40.9 Psoriasis, unspecified
L41 Parapsoriasis
Excludes1 poikiloderma vasculare atrophicans (L94.5)
L41.0 Pityriasis lichenoides et varioliformis acuta
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
Excludes1 lichen planopilaris (L66.1-)
L43.0 Hypertrophic lichen planus
L43.1 Bullous lichen planus
L43.2 Lichenoid drug reaction
UseAdditionalCode code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
L43.3 Subacute (active) lichen planus
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 [Gianotti-Crosti]
age Pediatric: [0-17]
L44.8 Other specified papulosquamous disorders
L44.9 Papulosquamous disorder, unspecified
L45 Papulosquamous disorders in diseases classified elsewhere
CodeFirst underlying disease.
nonPrimary Yes