ICD-10-CM Code H51.21
Internuclear ophthalmoplegia, right eye
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.H51.21 is a billable ICD code used to specify a diagnosis of internuclear ophthalmoplegia, right eye. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code H512 is used to code Internuclear ophthalmoplegia
Internuclear ophthalmoplegia (INO) is a disorder of conjugate lateral gaze in which the affected eye shows impairment of adduction. When an attempt is made to gaze contralaterally (relative to the affected eye), the affected eye adducts minimally, if at all. The contralateral eye abducts, however with nystagmus. Additionally, the divergence of the eyes leads to horizontal diplopia. That is, if the right eye is affected the patient will "see double" when looking to the left, seeing two images side-by-side. Convergence is generally preserved.
| Specialty: | Ophthalmology |
| ICD 9 Code: | 378.86 |
Schematic demonstrating right internuclear ophthalmoplegia, caused by injury of the right medial longitudinal fasciculus.
MS-DRG Mapping
- DRG Group #091-093 - Other disorders of nervous system with MCC.
- DRG Group #091-093 - Other disorders of nervous system with CC.
- DRG Group #091-093 - Other disorders of nervous system without CC or MCC.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code H51.21 and a single ICD9 code, 378.86 is an approximate match for comparison and conversion purposes.
Parent Code: H51.2 - Internuclear ophthalmoplegia