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  2. ICD-10-CM Codes List
  3. H00–H59
  4. H49-H52
  5. Disorders of refraction and accommodation (H52)

Disorders of refraction and accommodation (H52)

The H52 section of ICD-10-CM covers disorders related to the eye’s ability to focus light properly, including common refractive errors like hypermetropia (farsightedness), myopia (nearsightedness), and astigmatism. These codes are used to specify the type and laterality of these vision problems for accurate medical documentation.

This group includes detailed codes for different forms of hypermetropia (also known as simple or latent farsightedness) and myopia, which can be designated for right eye, left eye, or both eyes. Various types of astigmatism; including unspecified, regular, and irregular forms; are also coded here, helping to distinguish subtle variations like high astigmatism or postoperative astigmatism. Additionally, anisometropia and aniseikonia, conditions involving unequal focus or image size between the eyes, are specified. This section also addresses presbyopia (age-related focus difficulty) and disorders of accommodation such as internal ophthalmoplegia, paresis, and spasm of accommodation, terms often linked with cycloplegia or ciliary muscle spasm. Using these codes helps healthcare providers identify the exact refractive or accommodative disorder for treatment planning and billing.

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Aniseikonia

A condition in which the ocular image of an object as seen by one eye differs in size and shape from that seen by the other.

Anisometropia

A condition of an inequality of refractive power of the two eyes.

Astigmatism

Unequal or irregular curvature of the CORNEA (Corneal astigmatism) and/or the EYE LENS (Lenticular astigmatism) resulting in REFRACTIVE ERROR.

Myopia

A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.

Myopia, Degenerative

Excessive axial myopia associated with complications (especially posterior staphyloma and CHOROIDAL NEOVASCULARIZATION) that can lead to BLINDNESS.

Presbyopia

The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation.