ICD-10 · PDGM grouping
C57 Malignant neoplasm of other and unspecified female genital organs
All 14 codes in the C57 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
14
Can lead a claim
10
Cannot lead a claim
4
What CMS assigns to C57
10 of the 14 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 4 are assigned no clinical group. None of the 14 is assigned a comorbidity subgroup. 10 of the 14 can lead a claim.
Every code in C57
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| C57.0 Malignant neoplasm of fallopian tube | ||||
| C57.00 | Malignant neoplasm of unspecified fallopian tube | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C57.01 | Malignant neoplasm of right fallopian tube | Can lead a claim | K | None |
| C57.02 | Malignant neoplasm of left fallopian tube | Can lead a claim | K | None |
| C57.1 Malignant neoplasm of broad ligament | ||||
| C57.10 | Malignant neoplasm of unspecified broad ligament | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C57.11 | Malignant neoplasm of right broad ligament | Can lead a claim | K | None |
| C57.12 | Malignant neoplasm of left broad ligament | Can lead a claim | K | None |
| C57.2 Malignant neoplasm of round ligament | ||||
| C57.20 | Malignant neoplasm of unspecified round ligament | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| C57.21 | Malignant neoplasm of right round ligament | Can lead a claim | K | None |
| C57.22 | Malignant neoplasm of left round ligament | Can lead a claim | K | None |
| C57.3 | Malignant neoplasm of parametrium | Can lead a claim | K | None |
| C57.4 | Malignant neoplasm of uterine adnexa, unspecified | Can lead a claim | K | None |
| C57.7 | Malignant neoplasm of other specified female genital organs | Can lead a claim | K | None |
| C57.8 | Malignant neoplasm of overlapping sites of female genital organsCMS: Malignant neoplasm of ovrlp sites of female genital organs | Can lead a claim | K | None |
| C57.9 | Malignant neoplasm of female genital organ, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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