Malignant neoplasms of piriform sinus, unspecified

Coding note from above levels

For use of this category, reference should be made to the mortality coding rules and guidelines in the Reference Guide.

Exclusions from above levels

• http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
• http://id.who.int/icd/entity/879154182 – Neoplasms of central nervous system or related structures
• http://id.who.int/icd/entity/944754984 – Neoplasms of haematopoietic or lymphoid tissues