Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • D3A.092|

    Benign carcinoid tumor of the stomach

  • D3A.093|

    Benign carcinoid tumor of the kidney

  • D3A.094|

    Benign carcinoid tumor of the foregut, unspecified

  • D3A.095|

    Benign carcinoid tumor of the midgut, unspecified

  • D3A.096|

    Benign carcinoid tumor of the hindgut, unspecified

  • D3A.098|

    Benign carcinoid tumors of other sites

  • D3A.8|

    Other benign neuroendocrine tumors

  • D40|

    Neoplasm of uncertain behavior of male genital organs

  • D40.0|

    Neoplasm of uncertain behavior of prostate

  • D40.1|

    Neoplasm of uncertain behavior of testis

  • D40.10|

    Neoplasm of uncertain behavior of unspecified testis

  • D40.11|

    Neoplasm of uncertain behavior of right testis

  • D40.12|

    Neoplasm of uncertain behavior of left testis

  • D40.8|

    Neoplasm of uncertain behavior of other specified male genital organs

  • D40.9|

    Neoplasm of uncertain behavior of male genital organ, unspecified

  • D41|

    Neoplasm of uncertain behavior of urinary organs

  • D41.0|

    Neoplasm of uncertain behavior of kidney

  • D41.00|

    Neoplasm of uncertain behavior of unspecified kidney

  • D41.01|

    Neoplasm of uncertain behavior of right kidney

  • D41.02|

    Neoplasm of uncertain behavior of left kidney

  • D41.1|

    Neoplasm of uncertain behavior of renal pelvis

  • D41.10|

    Neoplasm of uncertain behavior of unspecified renal pelvis

  • D41.11|

    Neoplasm of uncertain behavior of right renal pelvis

  • D41.12|

    Neoplasm of uncertain behavior of left renal pelvis

  • D41.2|

    Neoplasm of uncertain behavior of ureter

  • D41.20|

    Neoplasm of uncertain behavior of unspecified ureter

  • D41.21|

    Neoplasm of uncertain behavior of right ureter

  • D41.22|

    Neoplasm of uncertain behavior of left ureter

  • D41.3|

    Neoplasm of uncertain behavior of urethra

  • D41.4|

    Neoplasm of uncertain behavior of bladder

  • D41.8|

    Neoplasm of uncertain behavior of other specified urinary organs

  • D41.9|

    Neoplasm of uncertain behavior of unspecified urinary organ

  • D42|

    Neoplasm of uncertain behavior of meninges

  • D42.0|

    Neoplasm of uncertain behavior of cerebral meninges

  • D42.1|

    Neoplasm of uncertain behavior of spinal meninges

  • D42.9|

    Neoplasm of uncertain behavior of meninges, unspecified

  • D43|

    Neoplasm of uncertain behavior of brain and central nervous system

  • D43.0|

    Neoplasm of uncertain behavior of brain, supratentorial

  • D43.1|

    Neoplasm of uncertain behavior of brain, infratentorial

  • D43.2|

    Neoplasm of uncertain behavior of brain, unspecified

  • D43.3|

    Neoplasm of uncertain behavior of cranial nerves

  • D43.4|

    Neoplasm of uncertain behavior of spinal cord

  • D43.8|

    Neoplasm of uncertain behavior of other specified parts of central nervous system

  • D43.9|

    Neoplasm of uncertain behavior of central nervous system, unspecified

  • D44|

    Neoplasm of uncertain behavior of endocrine glands

  • D44.0|

    Neoplasm of uncertain behavior of thyroid gland

  • D44.1|

    Neoplasm of uncertain behavior of adrenal gland

  • D44.10|

    Neoplasm of uncertain behavior of unspecified adrenal gland

  • D44.11|

    Neoplasm of uncertain behavior of right adrenal gland

  • D44.12|

    Neoplasm of uncertain behavior of left adrenal gland

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