D69.0

HCC Category Mapping

What This Code Means

Allergic purpura is a condition where small blood vessels in the skin become inflamed due to an allergic reaction, causing purple or red spots (purpura) to appear on the skin. This is typically a non-serious condition that resolves on its own, though it can occasionally affect other organs.

Coding Tips

• •Verify the documentation specifies this is allergic purpura (also known as IgA vasculitis or Henoch-Schönlein purpura) rather than other types of purpura, as the cause determines the correct code
• •Document any systemic involvement (joint pain, abdominal symptoms, kidney involvement) as these may require additional codes and affect severity assessment

Clinical Significance

Allergic purpura, also known as Henoch-Schonlein purpura or IgA vasculitis, is an immune-mediated small vessel vasculitis characterized by palpable purpura predominantly on the lower extremities, arthritis, abdominal pain, and renal involvement. It is most common in children but can occur in adults with typically more severe renal manifestations. Long-term prognosis depends primarily on the degree of renal involvement.

Documentation Requirements

• ✓Document the characteristic non-thrombocytopenic palpable purpura distribution, associated symptoms (joint pain, abdominal pain, hematuria/proteinuria), urinalysis results, renal function testing, and skin biopsy findings showing IgA deposits when performed.
• ✓Record any gastrointestinal or renal complications and treatment approach.

Commonly Confused Codes