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    OpenPayerBilling CodesDisorders of ocular muscles, binocular movement, accommodation and refractionICD-10-CM h51-other-disorders-of-binocular-movement
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    ICD-10-CM Code For Other Disorders Of Binocular Movement: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H51 includes disorders affecting binocular movement and ocular motility, such as nystagmus, internuclear ophthalmoplegia, and other conditions leading to impaired conjugate gaze and alignment. These ICD-10-CM diagnosis codes are used to document clinical findings related to ocular motor dysfunction, capture disease severity and involvement of specific extraocular muscles or cranial nerve pathways, and support care planning. Accurate coding within the ICD-10-CM H51 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM H51: Other Disorders Of Binocular Movement Overview

    This group includes diagnoses affecting coordinated eye movements and binocular vision, such as nystagmus, internuclear ophthalmoplegia, and other disorders that impair ocular motility. These conditions target the ocular motor system and cranial nerve pathways responsible for alignment and conjugate gaze. Accurate coding is important for clinical records, continuity of care, and correct reimbursement for vision and neurological services.

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    When to Use

    Use a code from this group when documentation indicates impaired binocular movement, abnormal gaze coordination, or specific ocular motility disorders affecting alignment. Codes from this group are applied for encounters addressing diagnosis, management, or follow-up of these ocular motor conditions.

    ICD-10-CM Codes

    9 rows

    ICD-10-CM CodeDescription
    H51.0Palsy (spasm) of conjugate gaze
    H51.11Convergence insufficiency
    H51.12Convergence excess
    H51.20Internuclear ophthalmoplegia, unspecified eye
    H51.21Internuclear ophthalmoplegia, right eye
    H51.22Internuclear ophthalmoplegia, left eye
    H51.23Internuclear ophthalmoplegia, bilateral
    H51.8Other specified disorders of binocular movement
    H51.9Unspecified disorder of binocular movement

    DRG Codes

    6 rows

    DRG CodeDescription
    091Other Disorders of Nervous System with MCC
    092Other Disorders of Nervous System with CC
    093Other Disorders of Nervous System without CC/MCC
    123Neurological Eye Disorders
    124Other Disorders of the Eye with MCC or Thrombolytic Agent
    125Other Disorders of the Eye without MCC

    Typical Clinical Scenarios

    • An elderly patient presents to the emergency department after sudden onset double vision and difficulty focusing when looking to the right following a hypertensive episode. Neurologic exam reveals an isolated lateral rectus palsy with horizontal diplopia on right gaze, and no prior history of ocular motility problems; neuroimaging is ordered to rule out stroke, and a binocular movement disorder code is assigned for the acute ocular motor deficit. Typical codes: H51.2, H51.21.
    • A middle-aged patient with long-standing thyroid eye disease follows in ophthalmology clinic for progressive misalignment and intermittent binocular diplopia that worsens with fatigue. On exam there is restrictive motility with vertical and horizontal incomitance and chronic diplopia impacting daily activities; a chronic disorder of binocular movement code is used to document the ongoing extraocular muscle dysfunction as part of the systemic disease. Typical codes: H51.8, H51.11.
    • A young adult seen in preoperative evaluation after ocular trauma months earlier reports persistent inability to converge for near tasks and asthenopia when reading; testing shows near convergence insufficiency without limited versions but with symptomatic difficulty maintaining single vision. The diagnosis code for a convergence disorder is assigned to capture this comorbid binocular dysfunction affecting rehabilitation and vision therapy planning. Typical codes: H51.0, H51.11.

    Related Codes

    H49-PARALYTIC-STRABISMUS

    ICD-10-CM Code For Paralytic Strabismus: Group Overview

    H50-OTHER-STRABISMUS

    ICD-10-CM Code For Other Strabismus: Group Overview

    H52-DISORDERS-OF-REFRACTION-AND-ACCOMMODATION

    ICD-10-CM Code For Disorders Of Refraction And Accommodation: 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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