Topography — Numerical List

The topography section has been adapted from the malignant neoplasm section of Chapter II of ICD-10. These topography terms have four-character codes that run from C00.0 to C80.9. A decimal point (.) separates subdivisions of the three-character categories. The structure of the topography code is shown in Figure 7.

Figure 7 Diagram showing the different elements that make up a typography code