M23.203
BillableDerangement of unspecified medial meniscus due to old tear or injury, right knee
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M23.203 an HCC code?
No. M23.203 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
M23.203 is the ICD-10-CM diagnosis code for derangement of unspecified medial meniscus due to old tear or injury, right knee. Damage to the inner cartilage (medial meniscus) of the right knee from an old tear or injury that has caused structural problems. M23.203 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other joint disorders (m20-m25).
M23.203 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify the specific location of the meniscus damage (medial vs. lateral) and laterality (right vs. left) from clinical documentation.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M23.203 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify the specific location of the meniscus damage (medial vs. lateral) and laterality (right vs. left) from clinical documentation
- •This code indicates a chronic condition from a previous injury; ensure the tear or injury is documented as old or chronic, not acute