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H49.31

H49.31Total (external) ophthalmoplegia, right eye

Billable / specific codeICD-10-CMright

H49.31 is a billable, specific ICD-10-CM code for total (external) ophthalmoplegia, right eye. It is valid for submission on a claim.

Excludes2 inherited from the categories above H49.31

Also inherited, and the opposite of Excludes1: these conditions are not part of H49.31, but a patient can have both, so you may code both.

Written on H49 Paralytic strabismus

  • internal ophthalmoplegia (H52.51-)
  • internuclear ophthalmoplegia (H51.2-)
  • progressive supranuclear ophthalmoplegia (G23.1)

Risk adjustment

H49.31 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

H49.31 is named in 31 Medicare coverage policies 31 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A54969Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56551Billing and Coding: Visual Fields Testing

Code history

H49.31 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share H49.3. If H49.31 is not quite right, the correct code is usually one of these.

Questions about H49.31

Is H49.31 a billable ICD-10-CM code?
Yes. H49.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H49.31 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.