D20 Benign neoplasm of soft tissue of retroperitoneum and peritoneum

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Benign neoplasm of soft tissue of retroperitoneum and peritoneum is D20 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
D10-D36: Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
Category D20
3 codes (2 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with D20.
  • benign lipomatous neoplasm of peritoneum and retroperitoneum (D17.79)
  • benign neoplasm of mesothelial tissue (D19.-)

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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