C54.9

Billable

Malignant neoplasm of corpus uteri, unspecified

HCC Category Mapping

V28HCC 23 — Melanoma and Other Skin Cancers

0.251

V24HCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.150

ESRDHCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.000

What This Code Means

Cancer of the uterine body (corpus) where the specific location within the uterus has not been identified or documented.

Coding Tips

•This is a less specific code; query the provider if more anatomical detail is available
•Use only when C54.1, C54.2, or C54.3 cannot be determined from documentation

Clinical Significance

Malignant neoplasm of corpus uteri, unspecified, is used when a uterine body cancer is confirmed but the specific anatomical subsite (endometrium, myometrium, fundus, isthmus) is not documented. This code should prompt a review of surgical pathology reports which typically provide detailed anatomical localization.

Documentation Requirements

✓Confirmed malignancy of the uterine corpus (body)
✓Histological type and grade
✓FIGO staging
✓Evidence that more specific subsite could not be determined
✓Documentation supporting why C54.1, C54.2, or C54.3 cannot be assigned
✓Treatment plan and current disease status

Commonly Confused Codes

C54.1 — Endometrium; most common specific subsite — review pathology for endometrial involvement C54.2 — Myometrium; use when sarcoma or primary myometrial tumor is identified C54.3 — Fundus uteri; use when the fundal location is specified C55 — Uterus, part unspecified; even less specific — does not distinguish corpus from cervix Z85.42 — Personal history of uterine cancer; use when treatment is completed with no active disease

Code Hierarchy

└C54Malignant neoplasm of corpus uteri └C54.9Malignant neoplasm of corpus uteri, unspecified

└C54.9Malignant neoplasm of corpus uteri, unspecified