ICD-10-CM 2027
ICD-10 code for testicular tumor
From the official ICD-10-CM alphabetic index entry “Tumor › testicular”. Page updated September 29, 2026.
About coding testicular tumor
The ICD-10-CM code for testicular tumor is D40.10 (Neoplasm of uncertain behavior of unspecified testis).
Within D40.1, choose D40.10 (unspecified testis) only when documentation doesn't support a more specific option: right testis (D40.11) and left testis (D40.12).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 715 (Male Reproductive System and Other O.R. Procedures for Malignancy with CC/MCC, relative weight 2.2906), DRG 716 (Male Reproductive System and Other O.R. Procedures for Malignancy without CC/MCC, relative weight 1.4619), DRG 722 (Malignancy, Male Reproductive System with MCC, relative weight 1.6689), DRG 723 (Malignancy, Male Reproductive System with CC, relative weight 1.0697) and DRG 724 (Malignancy, Male Reproductive System without CC/MCC, relative weight 0.5901), in MDC 12 (Diseases and Disorders of the Male Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about testicular tumor ICD-10 codes
What is the ICD-10 code for testicular tumor?
- D40.10 — Neoplasm of uncertain behavior of unspecified testis.
Is D40.10 billable?
- Yes. D40.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D40.10 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D40.10 as a principal diagnosis.
Is D40.10 a CC or MCC?
- No. D40.10 is neither a CC nor an MCC under MS-DRG v44.0.