ICD-10 Code H53.54 – Protanomaly (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.54 – Protanomaly
What it is
Protanomaly is a red-color vision defect in which the eye’s red-sensitive cone function is altered. It usually causes reduced ability to distinguish red hues from other colors.
Clinical signs
Patients may report difficulty telling reds apart, especially in low-light or color-dependent tasks. Clinical features vary; refer to documentation.
When to use this code
Use H53.54 when the record specifically documents protanomaly or an equivalent diagnosis of abnormal red color vision. This code fits congenital or acquired documentation only when the provider identifies protanomaly. If the chart only says “color blindness,” check documentation for the exact type.
Do not use for
Do not use this code for nonspecific visual complaints, color vision loss without type, or other color vision defects such as deuteranomaly or tritanomaly. Check documentation.
Coding tip
Code the most specific color vision diagnosis documented; if the type is unclear, query the provider before assigning H53.54.