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ICD-10-CM 2027 diagnosis code

H50.89Other specified strabismus

✓ Billable / specific

H50.89 is a valid, billable ICD-10-CM code for other specified strabismus. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H50.89

H50.89 is the ICD-10-CM diagnosis code for other specified strabismus. It belongs to category H50 (other strabismus), block H49-H52 (disorders of ocular muscles, binocular movement, accommodation and refraction) and chapter 7 (diseases of the eye and adnexa). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within H50.8, choose H50.89 (Other specified strabismus) only when documentation doesn't support a more specific option: Duane's syndrome (H50.81).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 123 (Neurological Eye Disorders, relative weight 0.822), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 378.73 (strabismus in other neuromuscular disorders).

Notes that apply from higher levels

Instructions written at a parent level also apply to H50.89.

Broader instructions also apply from H49-H52 Disorders of ocular muscles, binocular movement, accommodation and refraction and Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to H50.89.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 02 · Diseases and Disorders of the Eye

ICD-9-CM equivalent

Converter →
  • 378.73Strabismus in other neuromuscular disordersapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about H50.89

Is H50.89 billable?

Yes. H50.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can H50.89 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict H50.89 as a principal diagnosis.

Is H50.89 a CC or MCC?

No. H50.89 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does H50.89 group to?

H50.89 is used in the MS-DRG v44.0 logic for MS-DRG 123 (Neurological Eye Disorders). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for H50.89?

The CMS General Equivalence Mappings map H50.89 to ICD-9-CM 378.73.