Papulosquamous disorders
40 codes in this section
About Section L40-L45
Section L40-L45 (L40-L45) covers papulosquamous disorders. It sits within the Diseases of the skin and subcutaneous tissue chapter (L00-L99). This section contains 40 ICD-10-CM codes, 35 billable diagnoses you can submit on a claim, and 5 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in L40-L45
Grouped by 3-character root code. Click any code for full detail.
| L40.0 | Psoriasis vulgaris | Billable |
| L40.1 | Generalized pustular psoriasis | Billable |
| L40.2 | Acrodermatitis continua | Billable |
| L40.3 | Pustulosis palmaris et plantaris | Billable |
| L40.4 | Guttate psoriasis | Billable |
| L40.5 | Arthropathic psoriasis | Header |
| L40.50 | Arthropathic psoriasis, unspecified | Billable |
| L40.51 | Distal interphalangeal psoriatic arthropathy | Billable |
| L40.52 | Psoriatic arthritis mutilans | Billable |
| L40.53 | Psoriatic spondylitis | Billable |
| L40.54 | Psoriatic juvenile arthropathy | Billable |
| L40.59 | Other psoriatic arthropathy | Billable |
| L40.8 | Other psoriasis | Billable |
| L40.9 | Psoriasis, unspecified | Billable |
| L41.0 | Pityriasis lichenoides et varioliformis acuta | Billable |
| L41.1 | Pityriasis lichenoides chronica | Billable |
| L41.3 | Small plaque parapsoriasis | Billable |
| L41.4 | Large plaque parapsoriasis | Billable |
| L41.5 | Retiform parapsoriasis | Billable |
| L41.8 | Other parapsoriasis | Billable |
| L41.9 | Parapsoriasis, unspecified | Billable |
| L43.0 | Hypertrophic lichen planus | Billable |
| L43.1 | Bullous lichen planus | Billable |
| L43.2 | Lichenoid drug reaction | Billable |
| L43.3 | Subacute (active) lichen planus | Billable |
| L43.8 | Other lichen planus | Billable |
| L43.9 | Lichen planus, unspecified | Billable |
| L44.0 | Pityriasis rubra pilaris | Billable |
| L44.1 | Lichen nitidus | Billable |
| L44.2 | Lichen striatus | Billable |
| L44.3 | Lichen ruber moniliformis | Billable |
| L44.4 | Infantile papular acrodermatitis [Gianotti-Crosti] | Billable |
| L44.8 | Other specified papulosquamous disorders | Billable |
| L44.9 | Papulosquamous disorder, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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