Is D64 a billable ICD-10-CM code?

No. D64 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D64 sit in the tabular list?

Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89), in the block Aplastic and other anemias and other bone marrow failure syndromes (D60-D64).

What cannot be coded together with D64?

D64 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

D64

D64 — Other anemias

Non-billable headerICD-10-CM

D64 is a non-billable header ICD-10-CM code for other anemias. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

refractory anemia (D46.-)
refractory anemia with excess blasts in transformation [RAEB T] (C92.0-)

Other codes that can never be billed with D64

These codes carry an Excludes1 note pointing at D64. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D64 alone.

R71Abnormality of red blood cells
E53.1Pyridoxine deficiency
E83.1Disorders of iron metabolism
D53.9Nutritional anemia, unspecified

Risk adjustment

D64 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead D64

7 child codes. Green means billable.

Questions about D64

Is D64 a billable ICD-10-CM code?: No. D64 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D64 sit in the tabular list?: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89), in the block Aplastic and other anemias and other bone marrow failure syndromes (D60-D64).
What cannot be coded together with D64?: D64 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.