Oncology & Hematology Coding Alert

Reader Questions:

Know This 2025 BIA-ALCL ICD-10-CM Guideline Update

Question: In addition to the new codes, are there any 2025 ICD-10-CM guideline updates that oncology coders should be aware of?

New York subscriber

Answer: Yes. There has been one small change to guideline I.C.2.s, which governs code choice for breast implant-associated anaplastic large cell lymphoma (BIA-ALCL). The guideline tells you that, in addition to assigning C84.7A (Anaplastic large cell lymphoma, ALK-negative, breast) for BIA-ALCL, you can now assign C84.7B (Anaplastic large cell lymphoma, ALK-negative, in remission) for BIA-ALCL in remission, if applicable. Code C84.7B is a newly added code, and both the code and the guideline will be effective Oct.1, 2024.

You can view the full ICD-10-CM guidelines for 2025 here.