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C79.52 vs D47.9

C79.52 (Secondary malignant neoplasm of bone marrow) compared with D47.9 (Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified), from the official CMS tabular data. C79.52 and D47.9 name the same anatomical site (bone) with a different neoplasm behavior. MedCoder-derived

Relationship

Informational

Neoplasm table relationship

C79.52
Secondary malignant neoplasm of bone marrow
↔
D47.9
Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified

Same anatomical site, different neoplasm behavior.

Same site — uncertain behavior (bone)

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. C79.52 and D47.9 name the same anatomical site (bone) 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

C79.52Secondary malignant neoplasm of bone marrowD47.9Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified
Billing statusBillableBillable
ClassificationC00-D49 — NeoplasmsC00-D49 — Neoplasms
DefinitionSecondary malignant neoplasm of bone marrow is a billable ICD-10-CM diagnosis code (C79.52).Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified is a billable ICD-10-CM diagnosis code (D47.9).
Includes—
Lymphoproliferative disease 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