ICD-10 Code M23.321 - Other meniscus derangements, posterior horn of medial meniscus, right knee

ICD-10-CM Diagnosis Code M23.321

Diagnosis Code: M23.321 (Raw: M23321)

Description: Other meniscus derangements, posterior horn of medial meniscus, right knee

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 M23.321 is designated for Other meniscus derangements, posterior horn of medial meniscus, right knee. 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.