2026 ICD-10-CM Diagnosis Code N45Orchitis and epididymitis

ICD-10-CM Codes›N00–N99›N40-N53›N45

ICD-10-CM N45
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N45 is a non-billable ICD-10-CM category code for orchitis and epididymitis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N45.1, N45.2, N45.3, and N45.4.

Code Identity

ICD-10-CM Code
N45
Billable Status
No — Non-Billable Category
Code Describes
Orchitis and epididymitis
Chapter
N40-N53
Diseases of male genital organs

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN40-N53Diseases of male genital organs
CategoryN45Orchitis and epididymitis
This CodeN45Orchitis and epididymitis

Specific Coding for Orchitis and epididymitisOverview

Non-specific codes like N45 require more characters. Use one of these billable codes instead:

  • Use N45.1 for Epididymitis

  • Use N45.2 for Orchitis

  • Use N45.3 for Epididymo-orchitis

  • Use N45.4 for Abscess of epididymis or testis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

Patient EducationClinical

Testicular Disorders

Testicles, or testes, make male hormones and sperm. They are two egg-shaped organs inside the scrotum, the loose sac of skin behind the penis. It's easy to injure your testicles because they are not protected by bones or muscles. Men and boys should wear athletic supporters when they play sports.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N45Overview

Is N45 (Orchitis and epididymitis) a billable code?

No. This is a category header that groups the codes for orchitis and epididymitis, and headers cannot be submitted on claims. Claims for orchitis and epididymitis need a more specific code from this category, such as N45.1, N45.2, and N45.3.