Malignant neoplasm of pelvis

This code signifies the presence of a cancerous tumor originating in or spreading to the pelvic region. This includes malignancies affecting organs such as the bladder, rectum, reproductive organs (uterus, ovaries, prostate), and pelvic bones, when a more specific site is not identified. It indicates an uncontrolled growth of abnormal cells within the anatomical confines of the pelvis.

Use this code when documentation clearly states a malignant neoplasm of the pelvis without further specification of the primary site or when the primary site is unknown but confirmed to be within the pelvis. This is often applicable in cases of metastatic disease to the pelvis where the primary is obscure, or when the tumor spans multiple pelvic organs making a single site impossible to assign.

• Always seek more specific site codes (e.g., bladder, uterus, rectum) if available in the documentation.
• This code is for unspecified pelvic malignancy; avoid using it if a definitive primary or secondary site within the pelvis is documented.
• Consider sequencing rules for primary vs. secondary malignancies, especially if the primary site is known but outside the pelvis.