ICD-10-CM Diagnosis Code M21.10
Diagnosis Code: M21.10 (Raw: M2110)
Description: Varus deformity, not elsewhere classified, unspecified site
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code M21.10 is designated for Varus deformity, not elsewhere classified, unspecified site. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.