ICD-10 · PDGM grouping
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 v07.2.26.
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.
Code families in L40-L45
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
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 | Can lead a claim |
| L401 | Generalized pustular psoriasis | A | Can lead a claim |
| L402 | Acrodermatitis continua | A | Can lead a claim |
| L403 | Pustulosis palmaris et plantaris | A | Can lead a claim |
| L404 | Guttate psoriasis | A | Can lead a claim |
| L4050 | Arthropathic psoriasis, unspecified | A | Can lead a claim |
| L4051 | Distal interphalangeal psoriatic arthropathy | A | Can lead a claim |
| L4052 | Psoriatic arthritis mutilans | A | Can lead a claim |
| L4053 | Psoriatic spondylitis | A | Can lead a claim |
| L4054 | Psoriatic juvenile arthropathy | A | Can lead a claim |
| L4059 | Other psoriatic arthropathy | A | Can lead a claim |
| L408 | Other psoriasis | A | Can lead a claim |
| L409 | Psoriasis, unspecified | A | Can lead a claim |
| L410 | Pityriasis lichenoides et varioliformis acuta | A | Can lead a claim |
| L411 | Pityriasis lichenoides chronica | A | Can lead a claim |
| L413 | Small plaque parapsoriasis | A | Can lead a claim |
| L414 | Large plaque parapsoriasis | A | Can lead a claim |
| L415 | Retiform parapsoriasis | A | Can lead a claim |
| L418 | Other parapsoriasis | A | Can lead a claim |
| L419 | Parapsoriasis, unspecified | A | Can lead a claim |
| L42 | Pityriasis rosea | A | Can lead a claim |
| L430 | Hypertrophic lichen planus | A | Can lead a claim |
| L431 | Bullous lichen planus | A | Can lead a claim |
| L432 | Lichenoid drug reaction | A | Can lead a claim |
| L433 | Subacute (active) lichen planus | A | Can lead a claim |
| L438 | Other lichen planus | A | Can lead a claim |
| L439 | Lichen planus, unspecified | A | Can lead a claim |
| L440 | Pityriasis rubra pilaris | A | Can lead a claim |
| L441 | Lichen nitidus | A | Can lead a claim |
| L442 | Lichen striatus | A | Can lead a claim |
| L443 | Lichen ruber moniliformis | A | Can lead a claim |
| L444 | Infantile papular acrodermatitis [Gianotti-Crosti] | A | Can lead a claim |
| L448 | Other specified papulosquamous disorders | A | Can lead a claim |
| L449 | Papulosquamous disorder, unspecified | A | Can lead a claim |
| L45 | Papulosquamous disorders in diseases classified elsewhere | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue