D19 vs D20
D19 (Benign neoplasm of mesothelial tissue) compared with D20 (Benign neoplasm of soft tissue of retroperitoneum and peritoneum), 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. D20 carries an Excludes1 note covering D19: “benign neoplasm of mesothelial tissue (D19.-)”
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
| D19Benign neoplasm of mesothelial tissue | D20Benign neoplasm of soft tissue of retroperitoneum and peritoneum | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Benign neoplasm of mesothelial tissue is a non-billable ICD-10-CM category code (D19). | Benign neoplasm of soft tissue of retroperitoneum and peritoneum is a non-billable ICD-10-CM category code (D20). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources