Convert ICD-10 Code H31.21 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
H31.21 Choroideremia		363.55 Choroideremia

ICD-10 to ICD-9 crosswalk for code H31.21 - choroideremia based on the most recent General Equivalence Mappings (GEMS) information.