Certain infectious and parasitic diseases

C13 Malignant neoplasm of hypopharynx
Excludes: pyriform sinus ( C12 )
C13.0 Postcricoid region
C13.1 Aryepiglottic fold, hypopharyngeal aspect
Aryepiglottic fold:
· NOS
· marginal zone
Excludes: aryepiglottic fold, laryngeal aspect ( C32.1 )
C13.2 Posterior wall of hypopharynx
C13.8 Overlapping lesion of hypopharynx
[See note 5 at the beginning of this chapter]
C13.9 Hypopharynx, unspecified
Hypopharyngeal wall NOS
C14 Malignant neoplasm of other and ill-defined sites in the lip,
oral cavity and pharynx
Excludes: oral cavity NOS ( C06.9 )
C14.0 Pharynx, unspecified
C14.2 Waldeyer's ring
C14.8 Overlapping lesion of lip, oral cavity and pharynx
[See note 5 at the beginning of this chapter]
Malignant neoplasm of lip, oral cavity and pharynx whose point of origin cannot
be classified to any one of the categories C00-C14.2
Malignant neoplasms of digestive organs
(C15-C26)
C15 Malignant neoplasm of oesophagus
Note: Two alternative subclassifications are given:
.0-.2 by anatomical description
.3-.5 by thirds
This departure from the principle that categories should be mutually
exclusive is deliberate, since both forms of terminology are in use but the
resulting anatomical divisions are not analogous.
C15.0 Cervical part of oesophagus
C15.1 Thoracic part of oesophagus
C15.2 Abdominal part of oesophagus
C15.3 Upper third of oesophagus
C15.4 Middle third of oesophagus
C15.5 Lower third of oesophagus
C15.8 Overlapping lesion of oesophagus
[See note 5 at the beginning of this chapter]
C15.9 Oesophagus, unspecified
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