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07/15/2026

ASCO’s July 2026 Coding Tip of the Month: The Office Visit

The office visit is the most frequent encounter between an oncologist and a patient, making accurate diagnostic coding essential. Accurate reporting relies on documenting the precise behavior, location, and activity status of the neoplasm.

For example, solid tumors require differentiation between active malignancy and personal history, while hematologic conditions require explicit documentation of remission or relapse status. Additionally, capturing secondary factors like genetic susceptibility or treatment complications (e.g., chemotherapy-induced anemia) is critical to establishing medical necessity and supporting complex treatment decisions. Accurate diagnosis codes substantiate the services provided to a patient.

To support oncology teams, ASCO has released a new ICD-10-CM diagnosis coding resource. With the Evaluation and Management (E/M) tools on our website, this guide ensures your documentation captures the full complexity of the oncology visit.

Stay up-to-date on ASCO's Coding and Reimbursement page.

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