M23.201 (Derangement of unspecified lateral meniscus due to old tear or injury, left knee) compared with M23.202 (Derangement of unspecified lateral meniscus due to old tear or injury, unspecified knee), from the official CMS tabular data. M23.201 and M23.202 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. M23.201 and M23.202 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.
| M23.201Derangement of unspecified lateral meniscus due to old tear or injury, left knee | M23.202Derangement of unspecified lateral meniscus due to old tear or injury, unspecified 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 | Derangement of unspecified lateral meniscus due to old tear or injury, left knee is a billable ICD-10-CM diagnosis code (M23.201). | Derangement of unspecified lateral meniscus due to old tear or injury, unspecified knee is a billable ICD-10-CM diagnosis code (M23.202). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources