Psoriatic Arthritis ICD-10-CM Codes | 2025

What ICD-10 codes are used for psoriatic arthritis?

Psoriatic arthritis is an inflammatory arthritis affecting people with psoriasis. Here are some commonly used psoriatic arthritis ICD-10-CM codes:

L40.50: Arthropathic psoriasis, unspecified.

This code represents psoriatic arthritis, a chronic disease characterized by skin inflammation (psoriasis) and joints (inflammatory arthritis).

L40.51: Distal interphalangeal psoriatic arthropathy

This code is for a specific type of psoriatic arthritis affecting the distal joints of the fingers or toes.

L40.52: Psoriatic arthritis mutilans

This code describes arthritis mutilans, a severe, deforming, and destructive form of psoriatic arthritis.

L40.53: Psoriatic spondylitis

This code is used for psoriatic arthritis with spine involvement.

L40.54: Psoriatic juvenile arthropathy

This code is for juvenile psoriatic arthritis wherein the child has both psoriasis and arthritis.

Which psoriatic arthritis ICD codes are billable?

All of the ICD-10 psoriatic arthritis codes are billable.

Clinical information

Psoriatic arthritis, one of the musculoskeletal disorders, is a type of chronic inflammatory arthritis that affects some people with psoriasis, which means it's possible that people with psoriasis develop psoriatic arthritis.  

It generally appears in individuals between the ages of 30 and 50, but can start at any age. If it develops in children, it's considered a form of juvenile arthritis.

Here are some crucial clinical information pointers:

• Psoriatic arthritis is characterized by joint pain (in both the peripheral and axial joints), stiffness, and swelling, which could be severe and cause permanent damage if not treated early.
• Typical symptoms associated with psoriasis are general fatigue and skin rashes, and nail changes (skin symptoms). Others are similar to symptoms of rheumatoid arthritis, wherein the affected joints have pain, swelling, and stiffness.
• Obtaining a proper diagnosis includes conducting a physical exam, reviewing medical history, and ordering blood tests and imaging studies.
• Inflammation from psoriatic arthritis can affect the entire body and may lead to permanent joint and tissue damage if not treated.
• While there's no cure for psoriatic arthritis, healthcare providers can advise patients to help manage symptoms and prevent further joint damage.
• Increased risk factors include having psoriasis, a family history, and age. The majority of people with psoriatic arthritis also have skin psoriasis, which may lead to skin cancer.

Synonyms include

• Psoriasis arthropathica
• Arthritis mutilans
• Psoriatic spondylitis
• Distal interphalangeal psoriatic arthropathy
• Psoriatic arthropathy