H49.42
H49.42: Progressive external ophthalmoplegia, left eye
Billable / specific codeICD-10-CMleft
H49.42 is a billable, specific ICD-10-CM code for progressive external ophthalmoplegia, left eye. It is valid for submission on a claim.
Check H49.42 with the rest of the claim: free scrubberExcludes1 inherited from the categories above H49.42
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above H49.42
Not part of this code, but both may be coded when both are present.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
H49.42 is named in 28 Medicare coverage policies: 28 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
- A56551Billing and Coding: Visual Fields Testing
- A56612Billing and Coding: CT of the Head
Code history
Unchanged in every release from FY2024 to FY2027.