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D48.9

D48.9Neoplasm of uncertain behavior, unspecified

Billable / specific codeICD-10-CM

D48.9 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior, unspecified. It is valid for submission on a claim.

Risk adjustment

D48.9 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.

Medicare coverage

D48.9 is named in 8 Medicare coverage policies 8 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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  • A56505Billing and Coding: Transesophageal Echocardiography (TEE)
  • A57452Billing and Coding: Peripheral Nerve Blocks

Related codes at this level

Codes that share D48. If D48.9 is not quite right, the correct code is usually one of these.

Questions about D48.9

Is D48.9 a billable ICD-10-CM code?
Yes. D48.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D48.9 sit in the tabular list?
Neoplasms (C00-D49), in the block Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.