ICD-10-CM 2027
ICD-10 code for Arthropathic psoriasis
From the official ICD-10-CM alphabetic index entry “Psoriasis › arthropathic”. Page updated September 29, 2026.
About coding Arthropathic psoriasis
The ICD-10-CM code for Arthropathic psoriasis is L40.50 (Arthropathic psoriasis, unspecified). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L40.50.
Within L40.5, choose L40.50 (unspecified) only when documentation doesn't support a more specific option: distal interphalangeal psoriatic arthropathy (L40.51), psoriatic arthritis mutilans (L40.52), psoriatic spondylitis (L40.53), psoriatic juvenile arthropathy (L40.54) and other psoriatic arthropathy (L40.59).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 545 (Connective Tissue Disorders with MCC, relative weight 2.3892), DRG 546 (Connective Tissue Disorders with CC, relative weight 1.1745) and DRG 547 (Connective Tissue Disorders without CC/MCC, relative weight 0.7526), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Arthropathic psoriasis codes (official index)
Common questions about Arthropathic psoriasis ICD-10 codes
What is the ICD-10 code for Arthropathic psoriasis?
- L40.50 — Arthropathic psoriasis, unspecified. More specific codes apply when the documentation supports them: L40.52, L40.51, L40.54, L40.59 and others below.
What is the ICD-10 code for arthritis mutilans arthropathic psoriasis?
- L40.52 — Psoriatic arthritis mutilans.
What is the ICD-10 code for distal interphalangeal arthropathic psoriasis?
- L40.51 — Distal interphalangeal psoriatic arthropathy.
What is the ICD-10 code for juvenile arthropathic psoriasis?
- L40.54 — Psoriatic juvenile arthropathy.
What is the ICD-10 code for other specified arthropathic psoriasis?
- L40.59 — Other psoriatic arthropathy.
What is the ICD-10 code for spondylitis arthropathic psoriasis?
- L40.53 — Psoriatic spondylitis.
Is L40.50 billable?
- Yes. L40.50 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L40.50 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L40.50 as a principal diagnosis.
Is L40.50 a CC or MCC?
- No. L40.50 is neither a CC nor an MCC under MS-DRG v44.0.