Is D43 a billable ICD-10-CM code?

No. D43 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D43 sit in the tabular list?

Neoplasms (C00-D49), in the block Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48).

What cannot be coded together with D43?

D43 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

D43

D43 — Neoplasm of uncertain behavior of brain and central nervous system

Non-billable headerICD-10-CM

D43 is a non-billable header ICD-10-CM code for neoplasm of uncertain behavior of brain and central nervous system. 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.

neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (D48.2)

Other codes that can never be billed with D43

These codes carry an Excludes1 note pointing at D43. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D43 alone.

D43.0Neoplasm of uncertain behavior of brain, supratentorial

Risk adjustment

D43 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

D43 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 D43

7 child codes. Green means billable.

Questions about D43

Is D43 a billable ICD-10-CM code?: No. D43 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D43 sit in the tabular list?: Neoplasms (C00-D49), in the block Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48).
What cannot be coded together with D43?: D43 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.