ICD-10-CM 2027 diagnosis code
H50.4Other and unspecified heterotropia
H50.4 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.
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 H50.4
H50.4 is the ICD-10-CM diagnosis code for other and unspecified heterotropia. 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 a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within H50, choose H50.4 (Other and unspecified heterotropia) only when documentation doesn't support a more specific option: esotropia (H50.0), exotropia (H50.1), vertical strabismus (H50.2), intermittent heterotropia (H50.3), heterophoria (H50.5), mechanical strabismus (H50.6), other specified strabismus (H50.8) and unspecified strabismus (H50.9).
To report this condition, pick the subcode that matches the documentation: H50.40 (heterotropia), H50.41 (Cyclotropia), H50.42 (syndrome) and H50.43 (esotropia).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under H50.4
Notes that apply from higher levels
Instructions written at a parent level also apply to H50.4.
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.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about H50.4
Is H50.4 billable?
- No. H50.4 is a header code. Report one of its more specific subcodes instead.