Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • D31.9|

    Benign neoplasm of unspecified part of eye

  • D31.90|

    Benign neoplasm of unspecified part of unspecified eye

  • D31.91|

    Benign neoplasm of unspecified part of right eye

  • D31.92|

    Benign neoplasm of unspecified part of left eye

  • D32|

    Benign neoplasm of meninges

  • D32.0|

    Benign neoplasm of cerebral meninges

  • D32.1|

    Benign neoplasm of spinal meninges

  • D32.9|

    Benign neoplasm of meninges, unspecified

  • D33|

    Benign neoplasm of brain and other parts of central nervous system

  • D33.0|

    Benign neoplasm of brain, supratentorial

  • D33.1|

    Benign neoplasm of brain, infratentorial

  • D33.2|

    Benign neoplasm of brain, unspecified

  • D33.3|

    Benign neoplasm of cranial nerves

  • D33.4|

    Benign neoplasm of spinal cord

  • D33.7|

    Benign neoplasm of other specified parts of central nervous system

  • D33.9|

    Benign neoplasm of central nervous system, unspecified

  • D34|

    Benign neoplasm of thyroid gland

  • D35|

    Benign neoplasm of other and unspecified endocrine glands

  • D35.0|

    Benign neoplasm of adrenal gland

  • D35.00|

    Benign neoplasm of unspecified adrenal gland

  • D35.01|

    Benign neoplasm of right adrenal gland

  • D35.02|

    Benign neoplasm of left adrenal gland

  • D35.1|

    Benign neoplasm of parathyroid gland

  • D35.2|

    Benign neoplasm of pituitary gland

  • D35.3|

    Benign neoplasm of craniopharyngeal duct

  • D35.4|

    Benign neoplasm of pineal gland

  • D35.5|

    Benign neoplasm of carotid body

  • D35.6|

    Benign neoplasm of aortic body and other paraganglia

  • D35.7|

    Benign neoplasm of other specified endocrine glands

  • D35.9|

    Benign neoplasm of endocrine gland, unspecified

  • D36|

    Benign neoplasm of other and unspecified sites

  • D36.0|

    Benign neoplasm of lymph nodes

  • D36.1|

    Benign neoplasm of peripheral nerves and autonomic nervous system

  • D36.10|

    Benign neoplasm of peripheral nerves and autonomic nervous system, unspecified

  • D36.11|

    Benign neoplasm of peripheral nerves and autonomic nervous system of face, head, and neck

  • D36.12|

    Benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder

  • D36.13|

    Benign neoplasm of peripheral nerves and autonomic nervous system of lower limb, including hip

  • D36.14|

    Benign neoplasm of peripheral nerves and autonomic nervous system of thorax

  • D36.15|

    Benign neoplasm of peripheral nerves and autonomic nervous system of abdomen

  • D36.16|

    Benign neoplasm of peripheral nerves and autonomic nervous system of pelvis

  • D36.17|

    Benign neoplasm of peripheral nerves and autonomic nervous system of trunk, unspecified

  • D36.7|

    Benign neoplasm of other specified sites

  • D36.9|

    Benign neoplasm, unspecified site

  • D37|

    Neoplasm of uncertain behavior of oral cavity and digestive organs

  • D37.0|

    Neoplasm of uncertain behavior of lip, oral cavity and pharynx

  • D37.01|

    Neoplasm of uncertain behavior of lip

  • D37.02|

    Neoplasm of uncertain behavior of tongue

  • 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

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