2026 ICD-10-CM Diagnosis Code D40.8Neoplasm of uncertain behavior of other specified male genital organs
ICD-10-CM Codes›C00–D49›D37-D48›D40
- Billable — Valid for Submission
- Not Chronic
D40.8 is a billable ICD-10-CM diagnosis code for neoplasm of uncertain behavior of other specified male genital organs. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 715 through 716, 722 through 724. 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.
- Neoplasm of prepuce
- Neoplasm of uncertain behavior of body of penis
- Neoplasm of uncertain behavior of epididymis
- Neoplasm of uncertain behavior of glans penis
- Neoplasm of uncertain behavior of penis
- Neoplasm of uncertain behavior of prepuce
- Neoplasm of uncertain behavior of scrotum
- Neoplasm of uncertain behavior of spermatic cord
- Neoplasm of uncertain behavior of vas deferens
- Neoplasm of vas deferens
- Penile intraepithelial neoplasia
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Neoplasm of uncertain behavior of skin of male genital organs
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Epididymis
the convoluted cordlike structure attached to the posterior of the testis. epididymis consists of the head (caput), the body (corpus), and the tail (cauda). a network of ducts leaving the testis joins into a common epididymal tubule proper which provides the transport, storage, and maturation of spermatozoa.Foreskin
the double-layered skin fold that covers the glans penis, the head of the penis.Spermatic Cord
either of a pair of tubular structures formed by ductus deferens; arteries; veins; lymphatic vessels; and nerves. the spermatic cord extends from the deep inguinal ring through the inguinal canal to the testis in the scrotum.Spermatic Cord Torsion
the twisting of the spermatic cord due to an anatomical abnormality that left the testis mobile and dangling in the scrotum. the initial effect of testicular torsion is obstruction of venous return. depending on the duration and degree of cord rotation, testicular symptoms range from edema to interrupted arterial flow and testicular pain. if blood flow to testis is absent for 4 to 6 h, spermatogenesis may be permanently lost.Sterilization Reversal
procedures to reverse the effect of reproductive sterilization and to regain fertility. reversal procedures include those used to restore the flow in the fallopian tube or the vas deferens.Vas Deferens
the excretory duct of the testes that carries spermatozoa. it rises from the scrotum and joins the seminal vesicles to form the ejaculatory duct.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
Patient EducationClinical
Penis Disorders
Problems with the penis can cause pain and affect a man's sexual function and fertility. Penis disorders include:
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Convert D40.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D40.8Overview
Is D40.8 (Neoplasm of uncertain behavior of male genital organs) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of uncertain behavior of other specified male genital organs on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D40.8 group to?
When neoplasm of uncertain behavior of other specified male genital organs is the principal diagnosis on an inpatient stay, it groups to MS-DRG 715, 716, 722, 723, 724, with relative weights from 0.6117 to 2.2373 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D40.8?
Under the General Equivalence Mappings, neoplasm of uncertain behavior of other specified male genital organs converts to ICD-9-CM 236.6 (unc behav neo male NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
