D49 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Neoplasms of unspecified behavior.
Notes
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
Type 1 excludes
Neoplasms of uncertain behavior (D37-D44, D48)
Codes
D49.0
Neoplasm of unspecified behavior of digestive system
D49.1
Neoplasm of unspecified behavior of respiratory system
D49.2
Neoplasm of unspecified behavior of bone, soft tissue, and skin
D49.3
Neoplasm of unspecified behavior of breast
D49.4
Neoplasm of unspecified behavior of bladder
D49.5
Neoplasm of unspecified behavior of other genitourinary organs
D49.6
Neoplasm of unspecified behavior of brain
D49.7
Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system
D49.8
Neoplasm of unspecified behavior of other specified sites
D49.9
Neoplasm of unspecified behavior of unspecified site
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code