Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52) ICD-10-CM
The H49–H52 section covers disorders of ocular muscles, binocular movement, accommodation and refraction with 203 ICD-10-CM diagnosis codes, of which 150 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- nystagmus and other irregular eye movements H55
Code Ranges in This Section 4 ranges · 203 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| H49 | Paralytic strabismus (H49) | 38 | 29 |
| H50 | Other strabismus (H50) | 104 | 75 |
| H51 | Other disorders of binocular movement (H51) | 12 | 9 |
| H52 | Disorders of refraction and accommodation (H52) | 49 | 37 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the H49–H52 Code Range
These conditions affect eye alignment, movement of both eyes, and how the eyes focus.
H49 groups paralytic strabismus by the affected nerve or form of external ophthalmoplegia. Strabismus means the eyes do not align. H50 separates other forms of strabismus, including vertical, intermittent, and mechanical types.
H51 addresses other problems with the eyes moving together, including too little or too much convergence. H52 groups problems with refraction and accommodation, separating named focusing conditions from disorders of accommodation.
Questions About This Page
How many codes are in the H49-H52 range?
The H49-H52 range contains 203 ICD-10-CM diagnosis codes in FY 2027. 150 of them are billable, and the rest are category headers that organize the section.
What conditions does H49-H52 cover?
The range covers disorders of ocular muscles, binocular movement, accommodation and refraction. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
