ICD-10-CM > M00-M99 > M20-M25 > M20 > M20.1 M20.1 Hallux valgus (acquired) Non-Billable/Non-Specific Type 2 Excludes bunion (M21.6-) Codes M20.10Hallux valgus (acquired), unspecified footM20.11Hallux valgus (acquired), right footM20.12Hallux valgus (acquired), left foot