D49.3 – Neoplasm of unspecified behavior of breast
ICD-10-CM 2027 diagnosis code · Neoplasms of unspecified behavior (D49)
ICD-10-CM code
D49.3
- Code
D49.3(claims format:D493)- Description
- Neoplasm of unspecified behavior of breast
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- D49 Neoplasms of unspecified behavior (D49)
- Parent codes
- D49
Notes for D49.3
Excludes1 (not coded here):
- neoplasm of unspecified behavior of skin of breast (D49.2)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
D49 – Neoplasms of unspecified behavior
Includes:
- 'growth' NOS
- neoplasm NOS
- new growth NOS
- tumor NOS
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.
Related codes in D49
- D49.0 – Neoplasm of unspecified behavior of digestive systemBillable
- D49.1 – Neoplasm of unspecified behavior of respiratory systemBillable
- D49.2 – Neoplasm of unspecified behavior of bone, soft tissue, and skinBillable
- D49.4 – Neoplasm of unspecified behavior of bladderBillable
- D49.5 – Neoplasm of unspecified behavior of other genitourinary organsHeader
- D49.6 – Neoplasm of unspecified behavior of brainBillable
- D49.7 – Neoplasm of unspecified behavior of endocrine glands and other parts of nervous systemBillable
- D49.8 – Neoplasm of unspecified behavior of other specified sitesHeader
- D49.9 – Neoplasm of unspecified behavior of unspecified siteBillable
Frequently asked questions
What is ICD-10 code D49.3?
D49.3 is the ICD-10-CM code for neoplasm of unspecified behavior of breast, in the block D49 (Neoplasms of unspecified behavior (D49)).
Is D49.3 a billable code?
Yes. D49.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does D49.3 belong to?
It belongs to category D49 – Neoplasms of unspecified behavior.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.