D10.4 vs D10.6
D10.4 (Benign neoplasm of tonsil) compared with D10.6 (Benign neoplasm of nasopharynx), 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. D10.4 carries an Excludes1 note covering D10.6: “benign neoplasm of pharyngeal tonsil (D10.6)”
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
| D10.4Benign neoplasm of tonsil | D10.6Benign neoplasm of nasopharynx | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Benign neoplasm of tonsil is a billable ICD-10-CM diagnosis code (D10.4). | Benign neoplasm of nasopharynx is a billable ICD-10-CM diagnosis code (D10.6). |
| Includes | Benign neoplasm of tonsil (faucial) (palatine) | Benign neoplasm of pharyngeal tonsil Benign neoplasm of posterior margin of septum and choanae |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources