ICD-10 Code H31.23 – Gyrate Atrophy, Choroid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.23 – Gyrate atrophy, choroid
What it is
H31.23 identifies gyrate atrophy of the choroid, a rare inherited retinal disorder that causes progressive degeneration of the choroid and retina. Use it when the diagnosis is documented as gyrate atrophy.
Clinical signs
Typical findings include progressive night blindness, constricted visual fields, and characteristic chorioretinal atrophy on eye examination. Clinical features vary; refer to documentation.
When to use this code
Use H31.23 when the provider documents gyrate atrophy, choroid, or confirms the condition in the assessment. It may appear in ophthalmology notes, genetic evaluations, or problem lists. Code it only when the diagnosis is established or clearly stated.
Do not use for
Do not use this code for nonspecific retinal degeneration, choroidal scarring, or visual symptoms without a documented diagnosis. Check documentation if the note only says “retinal atrophy” or “chorioretinal changes.”
Coding tip
If the chart uses a synonym or abbreviated eye diagnosis, verify that it specifically means gyrate atrophy before assigning H31.23.