Question: What ICD-10-CM code should I report for focal high-grade prostatic intraepithelial neoplasia (PIN) from a prostate pathology report? AAPC Forum Subscriber Answer: You should report D07.5 (Carcinoma in situ of prostate) for high-grade PIN, grade III. Don’t miss: Code D07.5 also includes severe dysplasia of the prostate.