Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes Q00-Q99 – Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) > 2024 ICD-10-CM Codes Q65-Q79 – Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) > 2024 ICD-10-CM Codes Q66 – Congenital deformities of feet (Q66) > 2024 ICD-10-CM Codes Q66.9 – Congenital deformity of feet, unspecified (Q66.9)