Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes H00-H59 – Diseases of the eye and adnexa (H00-H59) > 2024 ICD-10-CM Codes H49-H52 – Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52) > 2024 ICD-10-CM Codes H52 – Disorders of refraction and accommodation (H52) > 2024 ICD-10-CM Codes H52.2 – Astigmatism (H52.2) > 2024 ICD-10-CM Codes H52.20 – Unspecified astigmatism (H52.20)