ICD-10 Code H30.042 – Focal chorioretinal inflammation, macular or paramacular, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H30.042 – Focal chorioretinal inflammation, macular or paramacular, left eye
What it is
This code identifies localized inflammation involving the choroid and retina in the macular or nearby parafoveal area of the left eye. Use it when documentation specifies focal chorioretinal inflammation limited to that eye and region.
Clinical signs
Findings may include reduced central vision, blurred vision, or a macular inflammatory lesion on eye examination. Clinical features vary; refer to documentation and imaging if provided.
When to use this code
Use H30.042 when the provider documents focal chorioretinal inflammation in the macular or paramacular area of the left eye. It fits cases where the diagnosis is localized and laterality is clearly stated. Confirm the anatomic site and eye before coding.
Do not use for
Do not use this code for right eye, bilateral disease, or unspecified eye involvement. Also avoid it when the record describes a different retinal or choroidal disorder. Check documentation.
Coding tip
Always match the laterality and exact retinal location in the note before assigning H30.042.