M50.221
BillableOther cervical disc displacement at C4-C5 level
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M50.221 an HCC code?
No. M50.221 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
M50.221 is the ICD-10-CM diagnosis code for other cervical disc displacement at c4-c5 level. A displaced or shifted disc at the C4-C5 level in the middle neck region without nerve root compression. M50.221 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other dorsopathies (m50-m54).
M50.221 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.
Ensure documentation specifically mentions C4-C5 level involvement before assigning this code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M50.221 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Ensure documentation specifically mentions C4-C5 level involvement before assigning this code
- •This code does not include radiculopathy; use M50.121 if nerve involvement is present