ICD-11 classes
04 Diseases of the immune system
Nonorgan specific systemic autoimmune disorders
4A44 — Vasculitis
4A44.B — Leukocytoclastic vasculitis
ICD-11 4A44.B — Leukocytoclastic vasculitis
Leukocytoclastic vasculitis (hypersensitivity vasculitis; hypersensitivity angiitis) is a histopathological term commonly used to denote a small-vessel vasculitis. It may be localised to the skin or may manifest in other organs. The internal organs affected most commonly include the joints, the gastrointestinal tract, and the kidneys. The prognosis is good in the absence of internal involvement. Leukocytoclastic vasculitis has many causes including infections, drugs and systemic autoimmune diseases but no cause is identified in up to 50% of patients with this condition.
The diagnosis includes nothing.
The diagnosis excludes nothing.
Diagnosis with code 4A44.B contains 3 clarifying diagnoses:
- 4A44.B0 — Cutaneous leukocytoclastic vasculitis
- 4A44.BY — Other specified leukocytoclastic vasculitis
- 4A44.BZ — Leukocytoclastic vasculitis, unspecified
The diagnosis is coded elsewhere:
- Vasculitis #18397
- Leukocytoclastic vasculitis #18420