Is D55.2 a billable ICD-10-CM code?

No. D55.2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D55.2 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 Hemolytic anemias (D55-D59).

What cannot be coded together with D55.2?

D55.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D55.2 (D55) and apply to it just the same.

D55.2

D55.2 — Anemia due to disorders of glycolytic enzymes

Non-billable headerICD-10-CM

D55.2 is a non-billable header ICD-10-CM code for anemia due to disorders of glycolytic enzymes. 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.

disorders of glycolysis not associated with anemia (E74.81-)

Excludes1 inherited from the categories above D55.2

These are not written on D55.2, but they bind it: a note on a category applies to every code beneath it. Billing D55.2 with anything listed here is a denial.

Written on D55 — Anemia due to enzyme disorders

drug-induced enzyme deficiency anemia (D59.2)

Other codes that can never be billed with D55.2

These codes carry an Excludes1 note pointing at D55.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D55.2 alone.

E74.4Disorders of pyruvate metabolism and gluconeogenesis

Risk adjustment

D55.2 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 history

D55.2 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead D55.2

2 child codes. Green means billable.

Related codes at this level

Codes that share D55. If D55.2 is not quite right, the correct code is usually one of these.

Questions about D55.2

Is D55.2 a billable ICD-10-CM code?: No. D55.2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D55.2 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 Hemolytic anemias (D55-D59).
What cannot be coded together with D55.2?: D55.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D55.2 (D55) and apply to it just the same.