L40-L45 — Papulosquamous disorders
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
Codes in range
35
No clinical group
1
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
34 of the 35 codes in L40-L45 group to MMTA - Other. A further 1 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in L40-L45
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| L400 | Psoriasis vulgaris | A | Accepted |
| L401 | Generalized pustular psoriasis | A | Accepted |
| L402 | Acrodermatitis continua | A | Accepted |
| L403 | Pustulosis palmaris et plantaris | A | Accepted |
| L404 | Guttate psoriasis | A | Accepted |
| L4050 | Arthropathic psoriasis, unspecified | A | Accepted |
| L4051 | Distal interphalangeal psoriatic arthropathy | A | Accepted |
| L4052 | Psoriatic arthritis mutilans | A | Accepted |
| L4053 | Psoriatic spondylitis | A | Accepted |
| L4054 | Psoriatic juvenile arthropathy | A | Accepted |
| L4059 | Other psoriatic arthropathy | A | Accepted |
| L408 | Other psoriasis | A | Accepted |
| L409 | Psoriasis, unspecified | A | Accepted |
| L410 | Pityriasis lichenoides et varioliformis acuta | A | Accepted |
| L411 | Pityriasis lichenoides chronica | A | Accepted |
| L413 | Small plaque parapsoriasis | A | Accepted |
| L414 | Large plaque parapsoriasis | A | Accepted |
| L415 | Retiform parapsoriasis | A | Accepted |
| L418 | Other parapsoriasis | A | Accepted |
| L419 | Parapsoriasis, unspecified | A | Accepted |
| L42 | Pityriasis rosea | A | Accepted |
| L430 | Hypertrophic lichen planus | A | Accepted |
| L431 | Bullous lichen planus | A | Accepted |
| L432 | Lichenoid drug reaction | A | Accepted |
| L433 | Subacute (active) lichen planus | A | Accepted |
| L438 | Other lichen planus | A | Accepted |
| L439 | Lichen planus, unspecified | A | Accepted |
| L440 | Pityriasis rubra pilaris | A | Accepted |
| L441 | Lichen nitidus | A | Accepted |
| L442 | Lichen striatus | A | Accepted |
| L443 | Lichen ruber moniliformis | A | Accepted |
| L444 | Infantile papular acrodermatitis [Gianotti-Crosti] | A | Accepted |
| L448 | Other specified papulosquamous disorders | A | Accepted |
| L449 | Papulosquamous disorder, unspecified | A | Accepted |
| L45 | Papulosquamous disorders in diseases classified elsewhere | None | Cannot group |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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