Vasculitis limited to the skin, unspecified

This code represents an inflammatory condition affecting the blood vessels specifically within the skin, without a more specific diagnosis of the underlying cause or type of vasculitis. It manifests as palpable purpura, nodules, ulcers, or other skin lesions resulting from vascular inflammation. The condition is confined to the integumentary system, with no evidence of systemic involvement.

Use this code when documentation confirms vasculitis that is clinically and/or histopathologically limited to the skin, and the specific type or etiology of the vasculitis is not identified. This applies when the physician has ruled out systemic vasculitides or when further diagnostic workup is pending or inconclusive. Documentation should explicitly state "vasculitis limited to the skin" or similar phrasing, without further specification.

• Do not use this code if the documentation specifies a particular type of cutaneous vasculitis (e.g., hypersensitivity vasculitis, urticarial vasculitis) or if there is evidence of systemic involvement.
• Consider additional codes for any associated symptoms or underlying conditions, if documented.
• If the specific type of vasculitis is known but limited to the skin, use the more specific code for that type of vasculitis, if available.