Diseases of the skin and subcutaneous tissue (L00-L99)
Excludes 2:
certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) lipomelanotic reticulosis (I89.8) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) systemic connective tissue disorders (M30-M36) viral warts (B07.-)
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 [+]
Excludes 1:
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 [+]
Excludes 1:
lichen planopilaris (L66.1-)
L43.0
Hypertrophic lichen planus
L43.1
Bullous lichen planus
L43.2
Lichenoid drug reaction
Use additional
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]
L44.8
Other specified papulosquamous disorders
L44.9
Papulosquamous disorder, unspecified
L45
Papulosquamous disorders in diseases classified elsewhere
Code first
underlying disease.
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The Provider of Services data are collected through the Centers for Medicare & Medicaid Services (CMS) Regional Offices.
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Medicare policy changes frequently so links to the source documents have been provided within the document for your reference.
The ICD-10 Diagnosis Codes are based on the latest diagnosis coding files (2021 ICD-10-CM and 2018 GEMs ).
The ICD-10 Procedure Codes are based on the latest procedure coding files (2021 ICD-10-PCS and 2018 GEMs ).