ICD-10-CM category
C19: Malignant neoplasm of rectosigmoid junction
C19 is “Malignant neoplasm of rectosigmoid junction”. It has no subcodes in this category.
Frequently asked questions
What is ICD-10-CM code C19?
C19 is the ICD-10-CM code for Malignant neoplasm of rectosigmoid junction.
Is C19 billable?
Yes — C19 is a valid, billable ICD-10-CM code (it has no further subdivisions).
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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