ICD-10 Code H31.109 – Choroidal degeneration, unspecified, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.109 – Choroidal degeneration, unspecified, unspecified eye
What it is
This code identifies degeneration of the choroid, the vascular layer beneath the retina, when the eye and specific type are not further specified. Use it when documentation confirms choroidal degeneration but does not name a more precise subtype.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced vision or retinal changes noted on eye examination, but the record should support choroidal degeneration rather than another retinal or macular disorder.
When to use this code
Use H31.109 when the provider documents choroidal degeneration and does not identify laterality or a more specific diagnosis. It is appropriate for ophthalmology notes, problem lists, or follow-up visits where the condition remains unspecified. If the record later specifies the eye or subtype, code to the higher level of detail.
Do not use for
Do not use this code for retinal degeneration, macular degeneration, or other chorioretinal disorders unless the provider clearly documents choroidal degeneration. Check documentation when the diagnosis is uncertain or when a more specific eye is stated.
Coding tip
Verify whether the chart names the affected eye or a more specific choroidal condition before defaulting to H31.109.