M23.341 (Other meniscus derangements, anterior horn of lateral meniscus, right knee) compared with M23.349 (Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee), from the official CMS tabular data. M23.341 and M23.349 code the same condition on opposite sides.
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. M23.341 and M23.349 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.
| M23.341Other meniscus derangements, anterior horn of lateral meniscus, right knee | M23.349Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Other meniscus derangements, anterior horn of lateral meniscus, right knee is a billable ICD-10-CM diagnosis code (M23.341). | Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee is a billable ICD-10-CM diagnosis code (M23.349). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources