ICD-10 Code D49.2 – Neoplasm of unspecified behavior of bone, soft tissue, and skin (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D49.2 – Neoplasm of unspecified behavior of bone, soft tissue, and skin
What it is
D49.2 identifies a neoplasm in bone, soft tissue, or skin whose behavior is not specified as benign or malignant. Use it when the record documents an unspecified or uncertain tumor classification.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a mass, skin lesion, swelling, or abnormal tissue growth, but the code depends on the recorded diagnosis, not the appearance alone.
When to use this code
Use D49.2 when the provider documents an unspecified neoplasm involving bone, soft tissue, or skin and does not state whether it is benign or malignant. It may also fit when pathology or imaging describes a neoplasm but behavior remains unclear. Check documentation for the exact site and wording.
Do not use for
Do not use D49.2 if the lesion is documented as benign, malignant, in situ, or as a specific cyst, inflammation, or other non-neoplastic condition. Check documentation for a more specific code.
Coding tip
Code the most specific documented site and behavior, and query the provider if the record does not clearly support an unspecified neoplasm.