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    OpenPayerBilling CodesDisorders of conjunctivaICD-10-CM h10-conjunctivitis-disorders
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    ICD-10-CM Code For Conjunctivitis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H10 includes acute and chronic inflammations and infections of the conjunctiva, such as viral conjunctivitis, bacterial conjunctivitis, allergic conjunctivitis, and other specified and unspecified conjunctival disorders. These ICD-10-CM diagnosis codes are used to document clinical encounters for conjunctival inflammation, capture cause when known, and indicate laterality and severity where applicable. Accurate coding within the ICD-10-CM H10 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM H10: Conjunctivitis Overview

    The ICD-10-CM H10 group covers conjunctivitis diagnoses, which are inflammations and infections of the conjunctiva, the membrane lining the eyelids and covering the white of the eye. These conditions affect the ocular surface and can be caused by infectious agents, allergic reactions, or irritants. Accurate coding matters because it supports appropriate clinical documentation and reimbursement for ophthalmic and primary care services.

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    When to Use

    Use a code from this group when a patient is diagnosed with conjunctival inflammation or infection and the clinician documents the type, cause, or laterality. Select the most specific code available to reflect the clinical scenario and any associated complications.

    ICD-10-CM Codes

    72 rows

    ICD-10-CM CodeDescription
    H10.011Acute follicular conjunctivitis, right eye
    H10.012Acute follicular conjunctivitis, left eye
    H10.013Acute follicular conjunctivitis, bilateral
    H10.019Acute follicular conjunctivitis, unspecified eye
    H10.021Other mucopurulent conjunctivitis, right eye
    H10.022Other mucopurulent conjunctivitis, left eye
    H10.023Other mucopurulent conjunctivitis, bilateral
    H10.029Other mucopurulent conjunctivitis, unspecified eye
    H10.10Acute atopic conjunctivitis, unspecified eye
    H10.11Acute atopic conjunctivitis, right eye
    H10.12Acute atopic conjunctivitis, left eye
    H10.13Acute atopic conjunctivitis, bilateral
    H10.211Acute toxic conjunctivitis, right eye
    H10.212Acute toxic conjunctivitis, left eye
    H10.213Acute toxic conjunctivitis, bilateral
    H10.219Acute toxic conjunctivitis, unspecified eye
    H10.221Pseudomembranous conjunctivitis, right eye
    H10.222Pseudomembranous conjunctivitis, left eye
    H10.223Pseudomembranous conjunctivitis, bilateral
    H10.229Pseudomembranous conjunctivitis, unspecified eye

    Showing 1–20 of 72

    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 young adult presents to urgent care with 2 days of acute onset redness, tearing, mucopurulent discharge, and eyelid matting in one eye after recent exposure to a friend with similar symptoms. On exam the conjunctiva is injected with purulent discharge and no corneal involvement; the provider documents acute infectious conjunctivitis and prescribes topical antibiotic drops. Typical codes: H10.011, H10.012
    • An older patient with seasonal allergic rhinitis reports months of intermittent bilateral ocular itching, redness, and stringy discharge that worsen during spring; prior treatments with OTC antihistamine drops provide partial relief. The visit documents chronic allergic conjunctivitis as an ongoing inflammatory condition managed with prescription topical antihistamine/mast cell stabilizer therapy. Typical codes: H10.11, H10.12
    • A contact lens wearer presents to the emergency department with severe unilateral eye pain, photophobia, decreased vision, and thick discharge; evaluation reveals conjunctival inflammation with concern for secondary bacterial conjunctivitis complicating a corneal abrasion. The clinician assigns a conjunctival infection code in addition to corneal injury codes to reflect the conjunctivitis as a comorbid infectious process complicating the ocular injury. Typical codes: H10.21, H10.22

    Related Codes

    H11-OTHER-DISORDERS-OF-CONJUNCTIVA

    ICD-10-CM Code For Other Disorders Of Conjunctiva: 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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