H51.23
✓ Billable
Internuclear ophthalmoplegia, bilateral
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H51.23
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H51.23?
ICD-10-CM code H51.23 represents Internuclear ophthalmoplegia, bilateral. It is a billable diagnosis code in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H51.23 billable?
Yes. H51.23 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is H51.23 in?
H51.23 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H51 category
H51
Other disorders of binocular movement
Non-billable
H51.0
Palsy (spasm) of conjugate gaze
Billable
H51.1
Convergence insufficiency and excess
Non-billable
H51.2
Internuclear ophthalmoplegia
Non-billable
H51.8
Other specified disorders of binocular movement
Billable
H51.9
Unspecified disorder of binocular movement
Billable
H51.11
Convergence insufficiency
Billable
H51.12
Convergence excess
Billable
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