D48.1 vs D48.6
D48.1 (Neoplasm of uncertain behavior of connective and other soft tissue) compared with D48.6 (Neoplasm of uncertain behavior of breast), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. D48.1 carries an Excludes1 note covering D48.6: “neoplasm of uncertain behavior of connective tissue of breast (D48.6-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| D48.1Neoplasm of uncertain behavior of connective and other soft tissue | D48.6Neoplasm of uncertain behavior of breast | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Neoplasm of uncertain behavior of connective and other soft tissue is a non-billable ICD-10-CM category code (D48.1). | Neoplasm of uncertain behavior of breast is a non-billable ICD-10-CM category code (D48.6). |
| Includes | Neoplasm of uncertain behavior of connective tissue of ear Neoplasm of uncertain behavior of connective tissue of eyelid Stromal tumors of uncertain behavior of digestive system | Neoplasm of uncertain behavior of connective tissue of breast Cystosarcoma phyllodes |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources