D38.4

D38.4: Neoplasm of uncertain behavior of thymus

Billable / specific codeICD-10-CM

D38.4 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior of thymus. It is valid for submission on a claim.

Check D38.4 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above D38.4

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)

Other codes that can never be billed with D38.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

D44Neoplasm of uncertain behavior of endocrine glands

Risk adjustment

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

Medicare coverage

D38.4 is named in 17 Medicare coverage policies: 17 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

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Code history

Unchanged in every release from FY2024 to FY2027.