Osteomyelitis of occipitoatlantoaxial vertebra
Osteomyelitis of vertebra of occipitatlantoaxial spine
M46.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM M46.21 became effective on October 1, 2022.
This is the American ICD-10-CM version of M46.21 – other international versions of ICD-10 M46.21 may differ.