Is H51.21 a billable code?
Yes. H51.21 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
H51.21: Internuclear ophthalmoplegia, right eye
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
H51.21 is a billable ICD-10-CM diagnosis code for internuclear ophthalmoplegia, right eye. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with H51.21 already added.Good Faith EstimateStart a cost estimate with H51.21 already added.CMS-1500 Claim FormFill a claim form with H51.21 in box 21.
Other codes in H51.2 Internuclear ophthalmoplegia
H51.21 questions
What does H51.21 mean?
H51.21 is the ICD-10-CM code for Internuclear ophthalmoplegia, right eye. It is in chapter 7, Diseases of the eye and adnexa (H00-H59).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.