D49 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Neoplasms of unspecified behavior.
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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.
Growth' NOS
Neoplasm NOS
New growth NOS
Tumor NOS
Neoplasms of uncertain behavior (D37-D44, D48)
Neoplasm of unspecified behavior of digestive system
Neoplasm of unspecified behavior of respiratory system
Neoplasm of unspecified behavior of bone, soft tissue, and skin
Neoplasm of unspecified behavior of breast
Neoplasm of unspecified behavior of bladder
Neoplasm of unspecified behavior of other genitourinary organs
Neoplasm of unspecified behavior of brain
Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system
Neoplasm of unspecified behavior of other specified sites
Neoplasm of unspecified behavior of unspecified site
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