D40.1Header code — not billable
Neoplasm of uncertain behavior of testis
- Chapter
- 2. Neoplasms
- Category
- D40
- Effective date
- October 1, 2026
Related codes in category D40
D40Neoplasm of uncertain behavior of male genital organsD40.0Neoplasm of uncertain behavior of prostateYesD40.10Neoplasm of uncertain behavior of unspecified testisYesD40.11Neoplasm of uncertain behavior of right testisYesD40.12Neoplasm of uncertain behavior of left testisYesD40.8Neoplasm of uncertain behavior of oth male genital organsYesD40.9Neoplasm of uncertain behavior of male genital organ, unspYes
Frequently asked questions
What is ICD-10 code D40.1?
D40.1 is an ICD-10-CM diagnosis code for Neoplasm of uncertain behavior of testis.
Is D40.1 a billable code?
No. D40.1 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is D40.1 in?
D40.1 falls under Chapter 2: Neoplasms.
When did D40.1 become effective?
D40.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D40.1?
D40.1 belongs to category D40, which includes 7 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.