C57.9 vs D28.9

C57.9 (Malignant neoplasm of female genital organ, unspecified) compared with D28.9 (Benign neoplasm of female genital organ, unspecified), from the official CMS tabular data. C57.9 and D28.9 name the same anatomical site (genital organ or tract) with a different neoplasm behavior. MedCoder-derived

Relationship

Informational

Neoplasm table relationship

C57.9

Malignant neoplasm of female genital organ, unspecified

↔

D28.9

Benign neoplasm of female genital organ, unspecified

Same anatomical site, different neoplasm behavior.

Same site — benign neoplasm (genital organ or tract)

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. C57.9 and D28.9 name the same anatomical site (genital organ or tract) 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

	C57.9Malignant neoplasm of female genital organ, unspecified	D28.9Benign neoplasm of female genital organ, unspecified
Billing status	Billable	Billable
Classification	C00-D49 — Neoplasms	C00-D49 — Neoplasms
Definition	Malignant neoplasm of female genital organ, unspecified is a billable ICD-10-CM diagnosis code (C57.9).	Benign neoplasm of female genital organ, unspecified is a billable ICD-10-CM diagnosis code (D28.9).
Includes	malignant neoplasm of skin of female genital organs Malignant neoplasm of female genitourinary tract NOS	adenomatous polyp benign neoplasm of skin of female genital organs benign teratoma

Edit this comparison Check a whole claim

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