D21

Classification

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Coding Guidance

D21 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.

Inclusion Terms

benign neoplasm of blood vessel
benign neoplasm of bursa
benign neoplasm of cartilage
benign neoplasm of fascia
benign neoplasm of fat
benign neoplasm of ligament, except uterine
benign neoplasm of lymphatic channel
benign neoplasm of muscle
benign neoplasm of synovia
benign neoplasm of tendon (sheath)
benign stromal tumors

Includes

From C00-D49

Excludes 1

Excludes1

benign neoplasm of articular cartilage

benign neoplasm of cartilage of larynx

benign neoplasm of cartilage of nose

benign neoplasm of connective tissue of breast

benign neoplasm of peripheral nerves and autonomic nervous system

benign neoplasm of peritoneum

benign neoplasm of retroperitoneum

benign neoplasm of uterine ligament, any

benign neoplasm of vascular tissue

hemangioma

lipomatous neoplasm

lymphangioma

uterine leiomyoma

More Specific Codes

D21.0

Benign neoplasm of connective and other soft tissue of head, face and neck

D21.1

Benign neoplasm of connective and other soft tissue of upper limb, including shoulder

D21.2

Benign neoplasm of connective and other soft tissue of lower limb, including hip

D21.3

Benign neoplasm of connective and other soft tissue of thorax

D21.4

Benign neoplasm of connective and other soft tissue of abdomen

D21.5

Benign neoplasm of connective and other soft tissue of pelvis

D21.6

Benign neoplasm of connective and other soft tissue of trunk, unspecified

D21.9

Benign neoplasm of connective and other soft tissue, unspecified

External Resources

2025 ICD-10 guidelines from CMS.gov