ICDwise
D49 ⚠ Non-billable

Neoplasms of unspecified behavior

ICD-10-CM · FY2026 · Neoplasms

Code
D49
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Includes
  • 'growth' NOS
  • neoplasm NOS
  • new growth NOS
  • tumor NOS
Excludes2 — not included here, but may code together
  • neoplasms of uncertain behavior (D37-D44, D48)
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.

Frequently asked questions

What is ICD-10 code D49?
ICD-10-CM code D49 represents Neoplasms of unspecified behavior. It is a non-billable header code requiring a more specific subcategory in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is D49 billable?
No. D49 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is D49 in?
D49 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.

Related codes in the D49 category

D49.0 Neoplasm of unspecified behavior of digestive system Billable D49.1 Neoplasm of unspecified behavior of respiratory system Billable D49.2 Neoplasm of unspecified behavior of bone, soft tissue, and skin Billable D49.3 Neoplasm of unspecified behavior of breast Billable D49.4 Neoplasm of unspecified behavior of bladder Billable D49.5 Neoplasm of unspecified behavior of other genitourinary organs Non-billable D49.6 Neoplasm of unspecified behavior of brain Billable D49.7 Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system Billable

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