2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Skin And Subcutaneous Tissue 680-709 > Infections Of Skin And Subcutaneous Tissue 680-686 > Other Local Infections Of Skin And Subcutaneous Tissue 686.* > 2006 ICD-9-CM Diagnosis 686.01 Pyoderma gangrenosum View the most recent version of ICD-9-CM 686.01 An idiopathic, rapidly evolving, and severely debilitating disease occurring most commonly in association with chronic ulcerative colitis. It is characterized by the presence of boggy, purplish ulcers with undermined borders, appearing mostly on the legs. The majority of cases are in people between 40 and 60 years old. Its etiology is unknown. 686.01 is a specific code that can be used to specify a diagnosis 686.01 contains 1 index entry View the ICD-9-CM Volume 1 686.* hierarchy  Index entries containing 686.01: Pyoderma, pyodermia 686.00 gangrenosum 686.01