Is D15 a billable ICD-10-CM code?

No. D15 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D15 sit in the tabular list?

Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).

What cannot be coded together with D15?

D15 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

D15

D15 — Benign neoplasm of other and unspecified intrathoracic organs

Non-billable headerICD-10-CM

D15 is a non-billable header ICD-10-CM code for benign neoplasm of other and unspecified intrathoracic organs. 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.

benign neoplasm of mesothelial tissue (D19.-)

Other codes that can never be billed with D15

These codes carry an Excludes1 note pointing at D15. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D15 alone.

D35Benign neoplasm of other and unspecified endocrine glands
E32.8Other diseases of thymus
D21.3Benign neoplasm of connective and other soft tissue of thorax

Risk adjustment

D15 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 to one of these instead D15

5 child codes. Green means billable.

Questions about D15

Is D15 a billable ICD-10-CM code?: No. D15 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D15 sit in the tabular list?: Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).
What cannot be coded together with D15?: D15 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.