D21.6 ICD-10-CM Code: Benign neoplasm of connective and other soft tissue of trunk, unspecified

D21.6 is the ICD-10-CM diagnosis code for benign neoplasm of connective and other soft tissue of trunk, unspecified. This code describes a benign (non-cancerous) tumor that develops in the soft tissues of the trunk area, such as muscles, fat, or connective tissue, when the specific location cannot be determined. These tumors are not life-threatening but may require monitoring or removal depending on their size and symptoms. D21.6 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering benign neoplasms, except benign neuroendocrine tumors (d10-d36).

D21.6 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Use this code only when the exact anatomical site of the trunk tumor is unknown or unspecified; if the location is documented (chest wall, abdominal wall, etc.), use a more specific D21 subcode.