H51.9 — Unspecified disorder of binocular movement
H51.9 is a billable, specific ICD-10-CM code for unspecified disorder of binocular movement. It is valid for submission on a claim.
Risk adjustment
H51.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
H51.9 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57637Billing and Coding: Visual Field Examination
- A57668Billing and Coding: Nerve Conduction Studies and Electromyography
How H51.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to H51.9.
- Oculomotor syndrome
- Disturbance›ocular motion
- Disturbance›oculomotor
- Syndrome›oculomotor
- Disorder›binocular›movement
Related codes at this level
Codes that share H51. If H51.9 is not quite right, the correct code is usually one of these.
Questions about H51.9
- Is H51.9 a billable ICD-10-CM code?
- Yes. H51.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H51.9 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52).