ICD-10-CM 2027 diagnosis code

D40Neoplasm of uncertain behavior of male genital organs

Not billable — use a more specific code

D40 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

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 D40

D40 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of male genital organs. It belongs to block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D40.0 (prostate), D40.1 (testis), D40.8 (organs) and D40.9 (unspecified).

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 D40

Notes that apply from higher levels

Instructions written at a parent level also apply to D40.

Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.

Code history

2016
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2021
2022
2023
2024
2025
2026
2027

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

Common questions about D40

Is D40 billable?: No. D40 is a header code. Report one of its more specific subcodes instead.