2026 ICD-10-CM Diagnosis Code B30Viral conjunctivitis

ICD-10-CM Codes›A00–B99›B25-B34›B30

ICD-10-CM B30
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B30 is a non-billable ICD-10-CM category code for viral conjunctivitis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B30.0, B30.1, B30.2, and B30.3.

Code Identity

ICD-10-CM Code
B30
Billable Status
No — Non-Billable Category
Code Describes
Viral conjunctivitis
Chapter
B25-B34
Other viral diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB25-B34Other viral diseases
CategoryB30Viral conjunctivitis
This CodeB30Viral conjunctivitis

Specific Coding for Viral conjunctivitisOverview

Non-specific codes like B30 require more characters. Use one of these billable codes instead:

  • Use B30.0 for Keratoconjunctivitis due to adenovirus

  • Use B30.1 for Conjunctivitis due to adenovirus

  • Use B30.2 for Viral pharyngoconjunctivitis

  • Use B30.3 for Acute epidemic hemorrhagic conjunctivitis (enteroviral)

  • Use B30.8 for Other viral conjunctivitis

  • Use B30.9 for Viral conjunctivitis, unspecified

Tabular List NotesGuidance

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

Type 1 Excludes

  • herpesviral herpes simplex ocular disease B00.5
  • ocular zoster B02.3

Clinical InformationClinical

  • Viral Conjunctivitis

    conjunctivitis resulting from viral infection.

Patient EducationClinical

Pink Eye

Conjunctivitis is the medical name for pink eye. It involves inflammation of the outer layer of the eye and inside of the eyelid. It can cause swelling, itching, burning, discharge, and redness. Causes include:

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 B30Overview

Is B30 (Viral conjunctivitis) a billable code?

No. This is a category header that groups the codes for viral conjunctivitis, and headers cannot be submitted on claims. Claims for viral conjunctivitis need a more specific code from this category, such as B30.0, B30.1, and B30.2.