Other and unspecified malignant neoplasm of skin (C44) ICD-10-CM

A sarcoma of the deep layers of the skin. The tumors are locally aggressive tends to recur but rarely metastatic. It can be classified into variants depending on the cell type tumors are derived from or by its characteristics: Pigmented variant from MELANIN-containing DERMAL DENDRITIC CELLS; Myxoid variant, myxoid STROMAL CELLS; Giant cell variant characterized by GIANT CELLS in the tumors; and Fibrosarcomatous variant chracterized by tumor areas histologically indistinguishable from FIBROSARCOMA.

A rare malignant neoplasm of the sweat glands. It most often develops as a form of degenerative progression from a benign ECCRINE POROMA.

A sarcoma derived from deep fibrous tissue, characterized by bundles of immature proliferating fibroblasts with variable collagen formation, which tends to invade locally and metastasize by the bloodstream. (Stedman, 25th ed)

The most common type of head and neck carcinoma that originates from cells on the surface of the NASAL CAVITY; MOUTH; PARANASAL SINUSES, SALIVARY GLANDS, and LARYNX. Mutations in TNFRSF10B, PTEN, and ING1 genes are associated with this cancer.

Of the 147 codes in this range, 101 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

The range classifies other and unspecified malignant neoplasm of skin. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.