C44.309 vs D49.2

C44.309 (Unspecified malignant neoplasm of skin of other parts of face) compared with D49.2 (Neoplasm of unspecified behavior of bone, soft tissue, and skin), from the official CMS tabular data. C44.309 and D49.2 name the same anatomical site (brow) with a different neoplasm behavior. MedCoder-derived

Relationship

Informational

Neoplasm table relationship

D49.2

Neoplasm of unspecified behavior of bone, soft tissue, and skin

↔

C44.309

Unspecified malignant neoplasm of skin of other parts of face

Same anatomical site, different neoplasm behavior.

Same site — primary malignancy (brow)

The behavior documented for the site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column of the neoplasm table, and therefore which code, applies.

Source: CMS Table of Neoplasms

Can these codes be reported together?

Same site, different neoplasm behavior. D49.2 and C44.309 name the same anatomical site (brow) with a different neoplasm behavior.

From the CMS/CDC Table of Neoplasms: the behavior documented for that site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column, and therefore which code, applies.

Side by side

	C44.309Unspecified malignant neoplasm of skin of other parts of face	D49.2Neoplasm of unspecified behavior of bone, soft tissue, and skin
Billing status	Billable	Billable
Classification	C00-D49 — Neoplasms (C00-D49)	C00-D49 — Neoplasms (C00-D49)
Definition	Unspecified malignant neoplasm of skin of other parts of face is a billable ICD-10-CM diagnosis code (C44.309).	Neoplasm of unspecified behavior of bone, soft tissue, and skin is a billable ICD-10-CM diagnosis code (D49.2).
Includes	malignant neoplasm of sebaceous glands malignant neoplasm of sweat glands	'growth' NOS neoplasm NOS new growth NOS tumor NOS

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources