D43 vs D48.2
D43 (Neoplasm of uncertain behavior of brain and central nervous system) compared with D48.2 (Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system), 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. D43 carries an Excludes1 note covering D48.2: “neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)”
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
| D43Neoplasm of uncertain behavior of brain and central nervous system | D48.2Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Neoplasm of uncertain behavior of brain and central nervous system is a non-billable ICD-10-CM category code (D43). | Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system is a billable ICD-10-CM diagnosis code (D48.2). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources