D49 Neoplasms of unspecified behavior

The ICD-10-CM code for Neoplasms of unspecified behavior is D49 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

D49: Neoplasms of unspecified behavior (D49)

Category D49

18 codes (14 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Chapter 2 TOC entry

2. Chapter 2: Neoplasms (C00-D49) .......................................................................................... 32

Chapter 2 contains codes for most benign and all malignant neoplasms

2. Chapter 2: Neoplasms (C00-D49) General Guidelines Chapter 2 of the ICD-10-CM contains the codes for most benign and all malignant neoplasms. Certain benign neoplasms, such as prostatic adenomas, may be found in the

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool