C57.00 ICD-10-CM Code: Malignant neoplasm of unspecified fallopian tube
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 736 — UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH MCC (MDC 13)
- MS-DRG 737 — UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH CC (MDC 13)
- MS-DRG 738 — UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITHOUT CC/MCC (MDC 13)
- MS-DRG 739 — UTERINE AND ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH MCC (MDC 13)
- MS-DRG 740 — UTERINE AND ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH CC (MDC 13)
- MS-DRG 741 — UTERINE AND ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITHOUT CC/MCC (MDC 13)
- MS-DRG 754 — MALIGNANCY, FEMALE REPRODUCTIVE SYSTEM WITH MCC (MDC 13)
- MS-DRG 755 — MALIGNANCY, FEMALE REPRODUCTIVE SYSTEM WITH CC (MDC 13)
- MS-DRG 756 — MALIGNANCY, FEMALE REPRODUCTIVE SYSTEM WITHOUT CC/MCC (MDC 13)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Risk Adjustment (CMS-HCC)
Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.
- HCC 22 — Bladder, Colorectal, and Other Cancers (supersedes HCC 23)
Other models: CMS-HCC V22 HCC 10 · RxHCC V08 HCC 22
Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C57.00 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- malignant neoplasm of skin of female genital organs
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C57.00 in its code family, with their registry titles.
- C57 — Malignant neoplasm of other and unspecified female genital organs
- C57.0 — Malignant neoplasm of fallopian tube
- C57.01 — Malignant neoplasm of right fallopian tube
- C57.02 — Malignant neoplasm of left fallopian tube
- C57.1 — Malignant neoplasm of broad ligament
- C57.10 — Malignant neoplasm of unspecified broad ligament
- C57.11 — Malignant neoplasm of right broad ligament
- C57.12 — Malignant neoplasm of left broad ligament
- C57.2 — Malignant neoplasm of round ligament
- C57.20 — Malignant neoplasm of unspecified round ligament
Neoplasm Table Sites (4)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, fallopian tube (accessory) — Malignant, Primary
- Neoplasm, neoplastic, oviduct — Malignant, Primary
- Neoplasm, neoplastic, salpinx (uterine) — Malignant, Primary
- Neoplasm, neoplastic, uterus, uteri, uterine, tube — Malignant, Primary