ICD-10 Code H50.4 – Other and unspecified heterotropia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.4 – Other and unspecified heterotropia
What it is
H50.4 identifies heterotropia, a manifest eye misalignment where one eye turns away from the normal line of sight. Use it when the record does not specify the exact type of strabismus.
Clinical signs
Findings may include an obvious eye turn, poor ocular alignment, or abnormal corneal light reflex. Clinical features vary; refer to documentation for the specific pattern and whether the deviation is constant or intermittent.
When to use this code
Use this code when the clinician documents heterotropia, exotropia, esotropia, hypertropia, or another manifest deviation but gives no more specific diagnosis. It is also appropriate when the note says “unspecified heterotropia.” Check documentation if laterality or type is recorded elsewhere.
Do not use for
Do not use H50.4 for latent strabismus, amblyopia without misalignment, or diplopia alone. If the chart identifies a more specific strabismus code, use that instead.
Coding tip
Code H50.4 only when the documentation supports a manifest eye deviation and no more precise heterotropia type is stated.