Psoriatic spondylitis

This code represents a chronic inflammatory arthropathy affecting the spine, associated with psoriasis. It involves inflammation of the vertebral joints, sacroiliac joints, and entheses, leading to back pain, stiffness, and potentially structural damage.

Assign this code when documentation explicitly states a diagnosis of psoriatic spondylitis. This diagnosis is typically made by a rheumatologist based on clinical findings, imaging (e.g., X-rays, MRI showing sacroiliitis or spondylitis), and the presence of psoriasis.

• Ensure documentation clearly links the spondylitis to psoriasis.
• Do not confuse with other forms of spondylitis (e.g., ankylosing spondylitis) unless specifically documented as psoriatic.
• Code also the underlying psoriasis (L40.0-L40.9) as a primary or secondary diagnosis, depending on the encounter's focus.