ICD-10 Code H31.009 – Unspecified chorioretinal scars, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.009 – Unspecified chorioretinal scars, unspecified eye
What it is
This code identifies scar tissue involving the choroid and retina in an unspecified eye. Use it when the record notes chorioretinal scarring but does not specify the cause or laterality.
Clinical signs
Findings may include a visible chorioretinal scar on eye examination, often described as a healed lesion in the posterior segment. Clinical features vary; refer to documentation.
When to use this code
Use H31.009 when the provider documents chorioretinal scar(s) and does not identify the right or left eye. It also fits when the note confirms scarring but gives no cause, such as old inflammation or injury. If the record names a more specific diagnosis, code that instead.
Do not use for
Do not use this code for active chorioretinal inflammation, retinal disorders without scarring, or a scar in a specified eye when laterality is documented. Check documentation.
Coding tip
Confirm both laterality and whether the lesion is a healed scar before assigning H31.009.