Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • D37.032|

    Neoplasm of uncertain behavior of the submandibular salivary glands

  • D37.039|

    Neoplasm of uncertain behavior of the major salivary glands, unspecified

  • D37.04|

    Neoplasm of uncertain behavior of the minor salivary glands

  • D37.05|

    Neoplasm of uncertain behavior of pharynx

  • D37.09|

    Neoplasm of uncertain behavior of other specified sites of the oral cavity

  • D37.1|

    Neoplasm of uncertain behavior of stomach

  • D37.2|

    Neoplasm of uncertain behavior of small intestine

  • D37.3|

    Neoplasm of uncertain behavior of appendix

  • D37.4|

    Neoplasm of uncertain behavior of colon

  • D37.5|

    Neoplasm of uncertain behavior of rectum

  • D37.6|

    Neoplasm of uncertain behavior of liver, gallbladder and bile ducts

  • D37.8|

    Neoplasm of uncertain behavior of other specified digestive organs

  • D37.9|

    Neoplasm of uncertain behavior of digestive organ, unspecified

  • D38|

    Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs

  • D38.0|

    Neoplasm of uncertain behavior of larynx

  • D38.1|

    Neoplasm of uncertain behavior of trachea, bronchus and lung

  • D38.2|

    Neoplasm of uncertain behavior of pleura

  • D38.3|

    Neoplasm of uncertain behavior of mediastinum

  • D38.4|

    Neoplasm of uncertain behavior of thymus

  • D38.5|

    Neoplasm of uncertain behavior of other respiratory organs

  • D38.6|

    Neoplasm of uncertain behavior of respiratory organ, unspecified

  • D39|

    Neoplasm of uncertain behavior of female genital organs

  • D39.0|

    Neoplasm of uncertain behavior of uterus

  • D39.1|

    Neoplasm of uncertain behavior of ovary

  • D39.10|

    Neoplasm of uncertain behavior of unspecified ovary

  • D39.11|

    Neoplasm of uncertain behavior of right ovary

  • D39.12|

    Neoplasm of uncertain behavior of left ovary

  • D39.2|

    Neoplasm of uncertain behavior of placenta

  • D39.8|

    Neoplasm of uncertain behavior of other specified female genital organs

  • D39.9|

    Neoplasm of uncertain behavior of female genital organ, unspecified

  • D3A|

    Benign neuroendocrine tumors

  • D3A.0|

    Benign carcinoid tumors

  • D3A.00|

    Benign carcinoid tumor of unspecified site

  • D3A.01|

    Benign carcinoid tumors of the small intestine

  • D3A.010|

    Benign carcinoid tumor of the duodenum

  • D3A.011|

    Benign carcinoid tumor of the jejunum

  • D3A.012|

    Benign carcinoid tumor of the ileum

  • D3A.019|

    Benign carcinoid tumor of the small intestine, unspecified portion

  • D3A.02|

    Benign carcinoid tumors of the appendix, large intestine, and rectum

  • D3A.020|

    Benign carcinoid tumor of the appendix

  • D3A.021|

    Benign carcinoid tumor of the cecum

  • D3A.022|

    Benign carcinoid tumor of the ascending colon

  • D3A.023|

    Benign carcinoid tumor of the transverse colon

  • D3A.024|

    Benign carcinoid tumor of the descending colon

  • D3A.025|

    Benign carcinoid tumor of the sigmoid colon

  • D3A.026|

    Benign carcinoid tumor of the rectum

  • D3A.029|

    Benign carcinoid tumor of the large intestine, unspecified portion

  • D3A.09|

    Benign carcinoid tumors of other sites

  • D3A.090|

    Benign carcinoid tumor of the bronchus and lung

  • D3A.091|

    Benign carcinoid tumor of the thymus

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