ICD-10 Code H31.2 – Hereditary choroidal dystrophy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.2 – Hereditary choroidal dystrophy
What it is
H31.2 identifies a hereditary dystrophy of the choroid, the vascular layer beneath the retina. Use it for inherited degenerative changes affecting this tissue, not for acquired choroidal disease.
Clinical signs
Clinical features vary; refer to documentation. Typical records may note inherited choroidal atrophy, pigmentary retinal changes, reduced vision, or abnormal fundus findings consistent with a dystrophic process.
When to use this code
Use H31.2 when the provider documents hereditary choroidal dystrophy or a clearly equivalent inherited choroidal degeneration. It is appropriate when the diagnosis is confirmed clinically, by family history, or by ophthalmic examination. Check documentation if the note only describes nonspecific choroidal changes.
Do not use for
Do not use this code for acquired choroidal disorders, inflammatory choroiditis, or choroidal tumors. If the record does not establish a hereditary dystrophy, check documentation.
Coding tip
Code H31.2 only when the hereditary nature is documented or clearly implied by the diagnosis wording.