L40.53
BillablePsoriatic spondylitis
HCC Category Mapping
V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.175V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.307ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000RxHCCHCC 81 — Psoriatic and Enteropathic Arthropathies
0.000What This Code Means
Psoriatic arthritis that primarily affects the spine and causes inflammation and stiffness of the vertebral joints.
Coding Tips
- •Document which spinal regions are affected (cervical, thoracic, lumbar) for more specific coding if available
- •Distinguish from ankylosing spondylitis by confirming the psoriasis diagnosis and psoriatic arthritis relationship
Clinical Significance
Psoriatic spondylitis involves inflammation of the spine and sacroiliac joints in the context of psoriasis, similar to ankylosing spondylitis. It is clinically significant because axial involvement indicates more severe systemic disease requiring biologic therapy and carries a higher risk of disability due to spinal fusion and reduced mobility. Distinguishing from primary ankylosing spondylitis is important for targeted treatment.
Documentation Requirements
- ✓Provider documentation of psoriatic spondylitis or axial psoriatic arthritis
- ✓Documentation of spinal or sacroiliac joint involvement
- ✓Imaging findings (sacroiliitis, syndesmophytes, spinal fusion) if available
- ✓HLA-B27 status if tested
- ✓Current treatment plan for axial disease
- ✓Functional assessment including spinal mobility
- ✓Associated skin psoriasis documentation
Commonly Confused Codes
M45.0-M45.9 (Ankylosing spondylitis) — primary axial spondyloarthropathy without psoriasis associationL40.50 (Arthropathic psoriasis, unspecified) — use L40.53 when axial/spinal involvement is specifically documentedL40.54 (Psoriatic juvenile arthropathy) — axial disease in pediatric populationM46.1 (Sacroiliitis, not elsewhere classified) — sacroiliac inflammation without psoriasis context