M23.051 (Cystic meniscus, posterior horn of lateral meniscus, right knee) compared with M23.052 (Cystic meniscus, posterior horn of lateral meniscus, left knee), from the official CMS tabular data. M23.051 and M23.052 code the same condition on opposite sides. MedCoder-derived
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. M23.051 and M23.052 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| M23.051Cystic meniscus, posterior horn of lateral meniscus, right knee | M23.052Cystic meniscus, posterior horn of lateral meniscus, left knee | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the musculoskeletal system and connective tissue | M00-M99 — Diseases of the musculoskeletal system and connective tissue |
| Definition | Cystic meniscus, posterior horn of lateral meniscus, right knee is a billable ICD-10-CM diagnosis code (M23.051). | Cystic meniscus, posterior horn of lateral meniscus, left knee is a billable ICD-10-CM diagnosis code (M23.052). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources