2027 ICD-10-CM Diagnosis Code D40.11Neoplasm of uncertain behavior of right testis
ICD-10-CM Codes›C00–D49›D37-D48›D40
- Billable — Valid for Submission
- Not Chronic
D40.11 is a billable ICD-10-CM diagnosis code for neoplasm of uncertain behavior of right testis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 715 through 716, 722 through 724. Coders also document this condition as bilateral neoplasm of uncertain behavior of testes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bilateral neoplasm of uncertain behavior of testes
- Neoplasm of uncertain behavior of left testis
- Neoplasm of uncertain behavior of right testis
- Neoplasm of uncertain behavior of testis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to D40.11: its own notes plus those printed at block D37-D48 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- neoplasms of unspecified behavior (D49.-)
Notes
General instructions on how these codes are used.
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name D40.11, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming D40.11: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 1
These codes carry an Excludes2 note naming D40.11: its condition is not part of those codes, and both may be reported when the patient has both.
- D49 Neoplasms of unspecified behavior
Notes 1
These notes mention D40.11.
- Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| testis, testes | C62.9 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › descended | C62.1 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › ectopic | C62.0 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › retained | C62.0 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › scrotal | C62.1 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › undescended | C62.0 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
| testis, testes › unspecified whether descended or undescended | C62.9 | C79.82 | D07.69 | D29.2 | D40.1 | D49.59 |
Patient EducationClinical
Testicular Cancer
Testicular cancer is a cancer that develops in the tissues of one or both testicles. The testicles, or testes, are part of the male reproductive system. They make male hormones and sperm. They are two egg-shaped glands inside the scrotum, a sac of loose skin that lies below the penis. You can get cancer in one or both testicles.
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Convert D40.11 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D40.11Overview
What is the ICD-10 code for neoplasm of uncertain behavior of right testis?
The ICD-10-CM code for neoplasm of uncertain behavior of right testis is D40.11 (sometimes written as D4011). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is D40.11 (Neoplasm of uncertain behavior of testis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of uncertain behavior of right testis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does D40.11 group to?
When neoplasm of uncertain behavior of right testis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 716, 723, 724, 715, 722, with relative weights from 0.5709 to 2.2896 depending on complications. Higher weights mean higher Medicare reimbursement.
Can D40.11 be reported with a code from D49?
Not as a rule. The Excludes1 note at block D37-D48, which applies to D40.11, lists "neoplasms of unspecified behavior (D49.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of D40.11?
Under the General Equivalence Mappings, neoplasm of uncertain behavior of right testis converts to ICD-9-CM 236.4 (unc behav neo testis). The mapping is approximate, so confirm the match fits the documentation.
