ICD-10 Code H31.9 – Unspecified disorder of choroid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.9 – Unspecified disorder of choroid
What it is
H31.9 identifies a disorder affecting the choroid, the vascular layer between the retina and sclera, when the exact condition is not named in the record. Use it when documentation confirms choroidal disease but does not specify the subtype.
Clinical signs
Clinical features vary; refer to documentation. Choroidal disorders may be described with abnormal choroidal appearance on eye examination or imaging, visual symptoms, or an ophthalmology assessment noting choroidal involvement.
When to use this code
Use H31.9 when the provider documents a choroid disorder without a more specific diagnosis, such as “choroidal disorder” or “unspecified choroid pathology.” It also fits when the record confirms choroidal disease but the subtype is not available in the note. Check documentation if the condition is later clarified.
Do not use for
Do not use this code when the chart identifies a specific choroidal condition, because a more precise code is usually available. Do not use it for retinal, scleral, or general eye disorders unless choroid involvement is specifically documented.
Coding tip
Query for the exact choroidal diagnosis before assigning H31.9, and code the more specific condition whenever the documentation supports it.