NPI Atlas

L40.5 – Arthropathic psoriasis

ICD-10-CM 2027 diagnosis code · Papulosquamous disorders

Non-billable header

ICD-10-CM code L40.5

Code: L40.5 (claims format: L405)
Description: Arthropathic psoriasis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 12. Diseases of the skin and subcutaneous tissue (L00-L99)
Block: L40-L45 Papulosquamous disorders
Parent codes: L40

Billable codes under L40.5

L40.5 is a header code and cannot be used on claims. Choose the most specific code:

L40.50 – Arthropathic psoriasis, unspecifiedBillable
L40.51 – Distal interphalangeal psoriatic arthropathyBillable
L40.52 – Psoriatic arthritis mutilansBillable
L40.53 – Psoriatic spondylitisBillable
L40.54 – Psoriatic juvenile arthropathyBillable
L40.59 – Other psoriatic arthropathyBillable

Related codes in L40

L40.0 – Psoriasis vulgarisBillable
L40.1 – Generalized pustular psoriasisBillable
L40.2 – Acrodermatitis continuaBillable
L40.3 – Pustulosis palmaris et plantarisBillable
L40.4 – Guttate psoriasisBillable
L40.8 – Other psoriasisBillable
L40.9 – Psoriasis, unspecifiedBillable

Frequently asked questions

What is ICD-10 code L40.5?

L40.5 is the ICD-10-CM code for arthropathic psoriasis, in the block L40-L45 (Papulosquamous disorders).

Is L40.5 a billable code?

No. L40.5 is a header code with more specific child codes; report one of the billable codes listed above.

What category does L40.5 belong to?

It belongs to category L40 – Psoriasis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.