Cumulative Official WHO Updates to ICD 10 - 1996 - 2001

Example 5: I (a) Carcinoma of breast (b) Secondaries in brain. Code to malignant neoplasm of breast (C50.9), since Rule 2 applies (c) Morphology indicates a primary malignant neoplasm. If a morphological type implies a primary site, such as hepatoma, consider this as if the word “primary” had been included. ................
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