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    v1.0.28
    OpenPayerBilling CodesOther viral diseasesICD-10-CM b30-viral-conjunctivitis
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    ICD-10-CM Code For Viral Conjunctivitis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B30 includes viral infections of the conjunctiva such as adenoviral conjunctivitis and other specified viral conjunctivitides, covering acute contagious conjunctival infections and their variants. These ICD-10-CM diagnosis codes are used to document clinical presentations of conjunctival inflammation due to viral causes, capturing laterality, acute versus unspecified timing, and diagnostic specificity relevant to ocular involvement. Accurate coding within the ICD-10-CM B30 group supports proper claim adjudication.

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    ICD-10-CM B30: Viral Conjunctivitis Overview

    The ICD-10-CM B30 group represents viral infections of the conjunctiva, commonly referred to as viral conjunctivitis or "pink eye", affecting the external eye tissues. These diagnoses target the ocular surface and surrounding structures and may involve symptoms such as redness, tearing, and discharge. Accurate coding matters for correct reimbursement because it links clinical documentation to the specific infectious etiology and supports appropriate claim adjudication.

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    When to Use

    Use codes from this group when the clinical documentation specifies a viral etiology for conjunctivitis, including identified viruses or when viral conjunctivitis is the working diagnosis. Select the code that reflects documented laterality and acuity to match the clinical record.

    ICD-10-CM Codes

    6 rows

    ICD-10-CM CodeDescription
    B30.0Keratoconjunctivitis due to adenovirus
    B30.1Conjunctivitis due to adenovirus
    B30.2Viral pharyngoconjunctivitis
    B30.3Acute epidemic hemorrhagic conjunctivitis (enteroviral)
    B30.8Other viral conjunctivitis
    B30.9Viral conjunctivitis, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    124Other Disorders of the Eye with MCC or Thrombolytic Agent
    125Other Disorders of the Eye without MCC

    Typical Clinical Scenarios

    • A previously healthy adult presents to urgent care with sudden onset of red, watery, and itchy eyes in one eye that progressed to the other eye over 48 hours, accompanied by scant mucopurulent discharge and recent exposure to a household contact with a viral eye infection; exam shows conjunctival hyperemia and follicular reaction without corneal involvement, consistent with acute viral conjunctivitis. A code from this group is assigned to capture an acute, self-limited viral ocular surface infection. Typical codes: B30.0, B30.9
    • A child in pediatric clinic returns with recurrent episodes of bilateral conjunctival irritation, tearing, and conjunctival follicles over several weeks during a community outbreak of adenovirus; symptoms are prolonged but not sight-threatening and require assessment for contagion control. A diagnosis from this group is used to document ongoing or recurrent viral conjunctival disease in a pediatric population during an outbreak. Typical codes: B30.1, B30.2
    • An elderly nursing home resident with advanced dementia develops fever and purulent conjunctival discharge and is evaluated in the emergency department for suspected secondary bacterial superinfection complicating a prior viral conjunctivitis; the clinician documents viral conjunctivitis with secondary conjunctival infection and systemic symptoms prompting antimicrobial consideration. A code from this group is assigned to capture the underlying viral conjunctival etiology as part of the comorbid infectious process. Typical codes: B30.3, B30.8

    Related Codes

    B25-CYTOMEGALOVIRAL-DISEASE

    ICD-10-CM Code For Cytomegaloviral Disease: Group Overview

    B26-MUMPS

    ICD-10-CM Code For Mumps: Group Overview

    B27-INFECTIOUS-MONONUCLEOSIS

    ICD-10-CM Code For Infectious Mononucleosis: Group Overview

    B33-OTHER-VIRAL-DISEASES-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Other Viral Diseases Not Elsewhere Classified: Group Overview

    B34-VIRAL-INFECTION-OF-UNSPECIFIED-SITE

    ICD-10-CM Code For Viral Infection Of Unspecified Site: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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