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ICD-10-CM 2027

ICD-10 code for testicular stromal tumor

D40.1

Neoplasm of uncertain behavior of testis

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Tumor › testicular stromal”. Page updated September 29, 2026.

About coding testicular stromal tumor

The ICD-10-CM code for testicular stromal tumor is D40.1 (Neoplasm of uncertain behavior of testis).

Within D40 (neoplasm of uncertain behavior of male genital organs), D40.1 is specifically for neoplasm of uncertain behavior of testis. Related codes cover prostate (D40.0), other specified male genital organs (D40.8) and male genital organ, unspecified (D40.9).

To report this condition, pick the subcode that matches the documentation: D40.10 (testis), D40.11 (testis) and D40.12 (testis).

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

Common questions about testicular stromal tumor ICD-10 codes

What is the ICD-10 code for testicular stromal tumor?

D40.1 — Neoplasm of uncertain behavior of testis (a header code; report a more specific subcode).

Is D40.1 billable?

No. D40.1 is a header code. Report one of its more specific subcodes instead.