H31.20
ICD-10-CMThis code signifies an inherited condition affecting the choroid, the vascular layer of the eye that provides nutrients to the retina. It involves a progressive degeneration of the choroid, leading to vision impairment. The "unspecified" nature indicates that the specific type of hereditary choroidal dystrophy has not been identified or documented.
Use this code when the medical record clearly states a diagnosis of hereditary choroidal dystrophy, but further specificity regarding the exact type (e.g., choroideremia, gyrate atrophy) is lacking. It is appropriate when genetic testing results are unavailable or inconclusive, or when the clinician has not yet determined the specific subtype.
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