Is D43.4 a billable ICD-10-CM code?

Yes. D43.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does D43.4 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 D43.4?

D43.4 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 D43.4 (D43) and apply to it just the same.

D43.4

D43.4 — Neoplasm of uncertain behavior of spinal cord

Billable / specific codeICD-10-CM

D43.4 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior of spinal cord. It is valid for submission on a claim.

Excludes1 inherited from the categories above D43.4

These are not written on D43.4, but they bind it: a note on a category applies to every code beneath it. Billing D43.4 with anything listed here is a denial.

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

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

Risk adjustment

D43.4 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 23 Prostate, Breast, and Other Cancers and Tumors0.186 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

D43.4 is named in 38 Medicare coverage policies — 38 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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Code history

D43.4 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share D43. If D43.4 is not quite right, the correct code is usually one of these.

Questions about D43.4

Is D43.4 a billable ICD-10-CM code?: Yes. D43.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D43.4 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 D43.4?: D43.4 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 D43.4 (D43) and apply to it just the same.