D20.0 vs D21
D20.0 (Benign neoplasm of soft tissue of retroperitoneum) compared with D21 (Other benign neoplasms of connective and other soft tissue), 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. D21 carries an Excludes1 note covering D20.0: “benign neoplasm of retroperitoneum (D20.0)”
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
| D20.0Benign neoplasm of soft tissue of retroperitoneum | D21Other benign neoplasms of connective and other soft tissue | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Benign neoplasm of soft tissue of retroperitoneum is a billable ICD-10-CM diagnosis code (D20.0). | Other benign neoplasms of connective and other soft tissue is a non-billable ICD-10-CM category code (D21). |
| Includes | — | benign neoplasm of blood vessel benign neoplasm of bursa benign neoplasm of cartilage benign neoplasm of fascia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources