M48.51XS ICD-10-CM Code: Collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, sequela of fracture

M48.51XS is the ICD-10-CM diagnosis code for collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, sequela of fracture. M48.51XS sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering spondylopathies (m45-m49).

M48.51XS 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.

M48.51XS is a billable ICD-10-CM code that can be reported on claims but does not currently contribute to a Medicare Advantage member's RAF score under any CMS risk adjustment model (V28, V24, ESRD, or RxHCC). Coders reviewing M48.51XS should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.