Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.

Excludes1

  • neoplasms of unspecified behavior (D49.-)
  1. D37 Neoplasm of uncertain behavior of oral cavity and digestive organs

    Excludes1

    • stromal tumors of uncertain behavior of digestive system (D48.1)
    1. D37.0 Neoplasm of uncertain behavior of lip, oral cavity and pharynx

      1. D37.01 Neoplasm of uncertain behavior of lip

        Inclusion term(s):

        • Neoplasm of uncertain behavior of vermilion border of lip
      2. D37.02 Neoplasm of uncertain behavior of tongue

      3. D37.03 Neoplasm of uncertain behavior of the major salivary glands

        • D37.030 Neoplasm of uncertain behavior of the parotid salivary glands
        • D37.031 Neoplasm of uncertain behavior of the sublingual salivary glands
        • D37.032 Neoplasm of uncertain behavior of the submandibular salivary glands
        • D37.039 Neoplasm of uncertain behavior of the major salivary glands, unspecified
      4. D37.04 Neoplasm of uncertain behavior of the minor salivary glands

        Inclusion term(s):

        • Neoplasm of uncertain behavior of submucosal salivary glands of lip
        • Neoplasm of uncertain behavior of submucosal salivary glands of cheek
        • Neoplasm of uncertain behavior of submucosal salivary glands of hard palate
        • Neoplasm of uncertain behavior of submucosal salivary glands of soft palate
      5. D37.05 Neoplasm of uncertain behavior of pharynx

        Inclusion term(s):

        • Neoplasm of uncertain behavior of aryepiglottic fold of pharynx NOS
        • Neoplasm of uncertain behavior of hypopharyngeal aspect of aryepiglottic fold of pharynx
        • Neoplasm of uncertain behavior of marginal zone of aryepiglottic fold of pharynx
      6. D37.09 Neoplasm of uncertain behavior of other specified sites of the oral cavity

    2. D37.1 Neoplasm of uncertain behavior of stomach

    3. D37.2 Neoplasm of uncertain behavior of small intestine

    4. D37.3 Neoplasm of uncertain behavior of appendix

    5. D37.4 Neoplasm of uncertain behavior of colon

    6. D37.5 Neoplasm of uncertain behavior of rectum

      Inclusion term(s):

      • Neoplasm of uncertain behavior of rectosigmoid junction
    7. D37.6 Neoplasm of uncertain behavior of liver, gallbladder and bile ducts

      Inclusion term(s):

      • Neoplasm of uncertain behavior of ampulla of Vater
    8. D37.8 Neoplasm of uncertain behavior of other specified digestive organs

      Inclusion term(s):

      • Neoplasm of uncertain behavior of anal canal
      • Neoplasm of uncertain behavior of anal sphincter
      • Neoplasm of uncertain behavior of anus NOS
      • Neoplasm of uncertain behavior of esophagus
      • Neoplasm of uncertain behavior of intestine NOS
      • Neoplasm of uncertain behavior of pancreas
    9. D37.9 Neoplasm of uncertain behavior of digestive organ, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.