Other nonthrombocytopenic purpura

This code represents purpuric skin lesions that are not caused by a low platelet count. It encompasses various conditions characterized by extravasation of blood into the skin or mucous membranes, leading to purple discoloration, but where the underlying mechanism is not thrombocytopenia. This includes disorders like senile purpura, purpura simplex, and mechanical purpura.

Use this code when documentation specifies purpura without evidence of thrombocytopenia as the cause. This is appropriate for cases such as age-related skin fragility leading to purpura, purpura due to minor trauma or increased vascular fragility, or idiopathic purpura where platelet counts are within normal limits. Supporting documentation should clearly state the presence of purpura and rule out thrombocytopenia.

• Always confirm that thrombocytopenia has been explicitly ruled out or is not mentioned as the cause of the purpura.
• If the specific type of nonthrombocytopenic purpura is known (e.g., Henoch-Schönlein purpura), a more specific code should be used.
• Consider sequencing this code after any underlying systemic conditions that may contribute to the purpura, if applicable and documented.