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D38.3

D38.3: Neoplasm of uncertain behavior of mediastinum

Billable / specific codeICD-10-CM

D38.3 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior of mediastinum. It is valid for submission on a claim.

Check D38.3 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above D38.3

A category’s note binds every code beneath it.

Written on D38: Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs

  • neoplasm of uncertain behavior of heart (D48.7)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

D38.3 is named in 20 Medicare coverage policies: 20 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
  • A53101Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update
  • A54188Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID®
  • A54386Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under D38

ICD-10-CMFY2027· effective October 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.