D21.3
ICD-10BillableBenign neoplasm of connective and oth soft tissue of thorax
Official ICD-10-CM descriptor (FY2026)
Benign neoplasm of connective and other soft tissue of thorax
D21.3 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Benign neoplasm of axilla
- Benign neoplasm of diaphragm
- Benign neoplasm of great vessels
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- benign neoplasm of heart (D15.1)
- benign neoplasm of mediastinum (D15.2)
- benign neoplasm of thymus (D15.0)
Related codes in D21
- D21.0Benign neoplasm of connctv/soft tiss of head, face and neck
- D21.1Benign neoplm of connctv/soft tiss of upper limb, inc shldrcategory
- D21.2Benign neoplasm of connctv/soft tiss of lower limb, inc hipcategory
- D21.4Benign neoplasm of connective and oth soft tissue of abdomen
- D21.5Benign neoplasm of connective and oth soft tissue of pelvis
- D21.6Benign neoplasm of connctv/soft tiss of trunk, unsp
- D21.9Benign neoplasm of connective and other soft tissue, unsp
Where this code sits
- Chapter
- 2. Neoplasms (C00-D49)
- Parent code
- D21
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.