Anemia diagnosis

Hello all- as of Oct 1 there has been a new dx added 285.3- Antineoplastic Chemotherapy induced anemia. Prior to this dx being added we have been billing procrit and aranesp with 284.89-Other specified aplastic anemias due to chronic systemic disease, drugs, infection, radiation or toxic and then as a secondary dx as E933.1-antineoplastic and immunosuppressive drugs.

My question is are you not suppose to use the 284.89 anymore and in it's place we use the 285.3? Also, do we still use the E933.1?

Part two-

Because there are the two different definitions- one is antineoplastic and one is aplastic- should we always be using the 285.3 because it is due to the chemo and not a because the patient already had a bone marrow/blood disorder?

I am so confused on this- any help is appreciated!

Thank you

anemia

Code 285.3 Antineoplastic chemotherapy induced anemia. Anemia is a common complication of myelosuppressive chemotherapy that results in a decreased functional capacity and quality of life (QOL) for cancer patients, this code is used when the treatment was the cause of the anemia. Chemotherapy-induced anemia is one of the most common side effects caused by treatment with chemotherapy, affecting between 20%-60% of cancer patients.
Note: code 285.22(Anemia in neoplastic disease) is appropriate when the anemia is caused by the cancer (ex, ovarian cancer with intratumor bleeding), not caused by the treatment. As you can see the dode depends on the cause, with code 285.22 the anemia is caused by the cancer condition, not the treatment.
The new code describes the cause (antineoplastic chemo. treatment caused the anemia.