Code
Hierarchy
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C00-D49 Neoplasms (C00-D49)
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C00-C96 Malignant neoplasms (C00-C96)
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C00-C75 Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue (C00-C75)
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C00-C14 Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
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C00 Malignant neoplasm of lip
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C01 Malignant neoplasm of base of tongue
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C02 Malignant neoplasm of other and unspecified parts of tongue
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C03 Malignant neoplasm of gum
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C04 Malignant neoplasm of floor of mouth
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C05 Malignant neoplasm of palate
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C06 Malignant neoplasm of other and unspecified parts of mouth
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C07 Malignant neoplasm of parotid gland
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C08 Malignant neoplasm of other and unspecified major salivary glands
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C09 Malignant neoplasm of tonsil
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C10 Malignant neoplasm of oropharynx
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C11 Malignant neoplasm of nasopharynx
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C12 Malignant neoplasm of pyriform sinus
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C13 Malignant neoplasm of hypopharynx
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C14 Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
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Notes
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Functional activity
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All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
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Morphology [Histology]
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Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
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Primary malignant neoplasms overlapping site boundaries
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A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
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Malignant neoplasm of ectopic tissue
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Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
- C25.9 Malignant neoplasm of pancreas, unspecified
Inclusion Terms
C01
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Malignant neoplasm of dorsal surface of base of tongue
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Malignant neoplasm of fixed part of tongue NOS
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Malignant neoplasm of posterior third of tongue