ICD-10-CM 2027 diagnosis code

D15Benign neoplasm of other and unspecified intrathoracic organs

Not billable — use a more specific code

D15 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Benign neoplasm of other and unsp intrathoracic organs

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D15

D15 is the ICD-10-CM diagnosis code for benign neoplasm of other and unspecified intrathoracic organs. It belongs to block D10-D36 (benign neoplasms, except benign neuroendocrine tumors) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D15.0 (thymus), D15.1 (heart), D15.2 (mediastinum), D15.7 (organs) and D15.9 (unspecified).

Don't report D15 together with the conditions in its Excludes1 note: benign neoplasm of mesothelial tissue (D19.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under D15

Coding notes

Excludes1Not coded here — never report together with this code

benign neoplasm of mesothelial tissue (D19.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to D15.

Broader instructions also apply from Chapter 2: Neoplasms.

Code history

2016
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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about D15

Is D15 billable?: No. D15 is a header code. Report one of its more specific subcodes instead.