When is it recommended to select a diagnosis code for malignancy?

Selecting a diagnosis code for malignancy is recommended after the pathology report becomes available because this report provides definitive confirmation of the diagnosis based on histological examination of the tissue. The pathology report is crucial in determining the specific type of malignancy, its grade, and any other necessary details that can influence treatment decisions and coding accuracy.

By waiting for the pathology report, the coder ensures that the selected diagnosis code accurately reflects the confirmed diagnosis rather than relying on provisional diagnoses or assumptions made during the initial consultation or before treatment begins. This standard aligns with coding guidelines that emphasize the importance of supporting documentation to justify the diagnoses reported for reimbursement and clinical decision-making.