M47.021
Billable codeVertebral artery compression syndromes, occipito-atlanto-axial region
The ICD-10 code for vertebral artery compression syndromes, occipito-atlanto-axial region is M47.021.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M47.022Vertebral artery compression syndromes, cervical region
- M47.029Vertebral artery compression syndromes, site unspecified
- M47.021Vertebral artery compression syndromes, occipito-atlanto-axial region
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 7211Approximate match
Associated MS-DRGs
M47.021 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.