H51.1Header code — not billable
Convergence insufficiency and excess
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H51
- Effective date
- October 1, 2026
Related codes in category H51
H51Other disorders of binocular movementH51.0Palsy (spasm) of conjugate gazeYesH51.11Convergence insufficiencyYesH51.12Convergence excessYesH51.2Internuclear ophthalmoplegiaH51.20Internuclear ophthalmoplegia, unspecified eyeYesH51.21Internuclear ophthalmoplegia, right eyeYesH51.22Internuclear ophthalmoplegia, left eyeYesH51.23Internuclear ophthalmoplegia, bilateralYesH51.8Other specified disorders of binocular movementYesH51.9Unspecified disorder of binocular movementYes
Frequently asked questions
What is ICD-10 code H51.1?
H51.1 is an ICD-10-CM diagnosis code for Convergence insufficiency and excess.
Is H51.1 a billable code?
No. H51.1 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is H51.1 in?
H51.1 falls under Chapter 7: Diseases of the eye and adnexa.
When did H51.1 become effective?
H51.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H51.1?
H51.1 belongs to category H51, which includes 11 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.