ICD-10 Code D21.11 – Benign neoplasm of connective and other soft tissue of right upper limb, including shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D21.11 – Benign neoplasm of connective and other soft tissue of right upper limb, including shoulder
What it is
This code identifies a noncancerous growth arising from connective or other soft tissues in the right upper limb, including the shoulder. It is used when the documentation specifies the right side and a benign soft-tissue neoplasm.
Clinical signs
Findings often include a localized mass, swelling, or a palpable lump in the right arm, forearm, hand, or shoulder region. Clinical features vary; refer to documentation for whether the lesion is painful, enlarging, or incidentally found.
When to use this code
Use D21.11 when the provider documents a benign neoplasm of connective or other soft tissue and clearly states the lesion is on the right upper limb or shoulder. This code fits pathology-confirmed benign tumors and documented benign soft-tissue masses in that location. If the record only says “soft tissue mass,” check documentation before coding.
Do not use for
Do not use this code for malignant neoplasms, unspecified laterality, or lesions in the left upper limb or other body sites. Do not assign it when the diagnosis is a cyst, inflammation, or trauma-related swelling unless the provider documents a benign neoplasm.
Coding tip
Verify both benign behavior and right-side location in the note before assigning D21.11.