Hello. Does anyone know what ICD-9 code to use for "Personal history of carcinoma in situ of skin"? Ca in situ of skin is in code range 232.X, which falls under "malignancy" in the ICD-9 neoplasm table; however, V10.83 (personal history of malignant neoplasm of skin) can only be used for conditions classifiable to 170-173, 190-195. I feel like I'm in a Coding Conventions Catch 22 I don't want to give a patient a personal history of malignant skin cancer if it is not correct to do so. Thanks for any suggestions!