Z48.811
BillableEncounter for surgical aftercare following surgery on the nervous system
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is Z48.811 an HCC code?
No. Z48.811 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
Z48.811 is the ICD-10-CM diagnosis code for encounter for surgical aftercare following surgery on the nervous system. A follow-up visit for recovery and monitoring after surgery on the brain, spinal cord, or peripheral nerves. Z48.811 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering encounters for other specific health care (z40-z53).
Z48.811 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.
Document the specific neurological surgery performed (e.g., craniotomy, spinal fusion, nerve repair).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z48.811 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the specific neurological surgery performed (e.g., craniotomy, spinal fusion, nerve repair)
- •Monitor for neurological complications and code them separately if they occur
Excludes 2 — Not included here, may code separately
- encounter for surgical aftercare following surgery on the sense organs (Z48.810)