1. D49 Neoplasms of unspecified behavior

    Note: Category D49 classifies by site neoplasms of unspecified morphology and behavior. The term 'mass', unless otherwise stated, is not to be regarded as a neoplastic growth.

    Includes:

    • 'growth' NOS
    • neoplasm NOS
    • new growth NOS
    • tumor NOS

    Excludes1

    • neoplasms of uncertain behavior (D37-D44, D48)
    1. D49.0 Neoplasm of unspecified behavior of digestive system

    2. D49.1 Neoplasm of unspecified behavior of respiratory system

    3. D49.2 Neoplasm of unspecified behavior of bone, soft tissue, and skin

    4. D49.3 Neoplasm of unspecified behavior of breast

    5. D49.4 Neoplasm of unspecified behavior of bladder

    6. D49.5 Neoplasm of unspecified behavior of other genitourinary organs

      1. D49.51 Neoplasm of unspecified behavior of kidney

        • D49.511 Neoplasm of unspecified behavior of right kidney
        • D49.512 Neoplasm of unspecified behavior of left kidney
        • D49.519 Neoplasm of unspecified behavior of unspecified kidney
      2. D49.59 Neoplasm of unspecified behavior of other genitourinary organ

    7. D49.6 Neoplasm of unspecified behavior of brain

    8. D49.7 Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system

    9. D49.8 Neoplasm of unspecified behavior of other specified sites

      1. D49.81 Neoplasm of unspecified behavior of retina and choroid

        Inclusion term(s):

        • Dark area on retina
        • Retinal freckle
      2. D49.89 Neoplasm of unspecified behavior of other specified sites

    10. D49.9 Neoplasm of unspecified behavior of unspecified site

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.