D64.9 ICD-10-CM Code: Anemia, unspecified

D64.9 is the ICD-10-CM diagnosis code for anemia, unspecified. This code describes a condition where a patient has abnormally low red blood cells or hemoglobin levels, but the specific type or cause of the anemia has not been determined or documented. It is used when the medical record does not provide enough information to assign a more specific anemia diagnosis. D64.9 sits in the ICD-10-CM chapter for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (d50-d89), within the section covering aplastic and other anemias and other bone marrow failure syndromes (d60-d64).

D64.9 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Use this code only when the type of anemia cannot be determined from the medical record; always attempt to obtain more specific documentation from the provider about the anemia's cause (iron deficiency, vitamin B12 deficiency, hemolytic, etc.).