2027 ICD-10-CM Diagnosis Code B30Viral conjunctivitis

ICD-10-CM Codes›A00–B99›B25-B34›B30

ICD-10-CM B30
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Viral conjunctivitis
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B30: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • herpesviral [herpes simplex] ocular disease (B00.5)
  • ocular zoster (B02.3)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name B30, its category, or a range that includes it.

Applicable To 1

These notes mention B30.

  • O98.5 Other viral diseases complicating pregnancy, childbirth and the puerperium
    Conditions in A80-B09, B25-B34, R87.81-, R87.82- names B25-B34, which includes this code

Excludes1 1

These codes carry an Excludes1 note naming B30: they are not reported together with it, unless the two conditions are unrelated.

  • H10.23 Serous conjunctivitis, except viral
    viral conjunctivitis (B30.-)

Clinical InformationClinical

  • Conjunctivitis, Viral

    inflammation, often mild, of the conjunctiva caused by a variety of viral agents. conjunctival involvement may be part of a systemic 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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B30Overview

What is the ICD-10 code for viral conjunctivitis?

B30 is the ICD-10-CM category for viral conjunctivitis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can B30 be reported with B00.5?

Not as a rule. The Excludes1 note on B30 lists "herpesviral [herpes simplex] ocular disease (B00.5)". 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).