ICD-10-CM Diagnosis Code (2025)
Official Description for M21.0
Valgus deformity, not elsewhere classified
Coding Notes & Guidelines for M21.0
Excludes1: Not Coded Here
- metatarsus valgus (Q66.6)
- talipes calcaneovalgus (Q66.4-)
Inclusion Terms
Cubitus valgus
Inclusion Terms
- Genu valgum
- Knock knee
Parent Code (Less Specific):
About ICD-10-CM Code M21.0 (Valgus deformity)
ICD-10-CM code M21.0 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M21.0 became effective on October 1, 2024.
This page provides detailed information about M21.0 - Valgus deformity, not elsewhere classified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Valgus deformity related to not elsewhere classified.