2026 ICD-10-CM Diagnosis Code M47.012Anterior spinal artery compression syndromes, cervical region
ICD-10-CM Codes›M00–M99›M45-M49›M47
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
M47.012 is a billable ICD-10-CM diagnosis code for anterior spinal artery compression syndromes, cervical region. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 551 through 552. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 22 closely related codes. Coders also document this condition as anterior spinal artery compression syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Spondylopathies/spondyloarthropathy (including infective).
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anterior spinal artery compression syndrome
- Anterior spinal artery compression syndrome of cervical spinal cord
- Injury of anterior spinal artery
- Ischemic anterior cord syndrome
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Syndrome See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Neck Injuries and Disorders
Any part of your neck - muscles, bones, joints, tendons, ligaments, or nerves - can cause neck problems. Neck pain is very common. Pain may also come from your shoulder, jaw, head, or upper arms.
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Convert M47.012 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M47.012Overview
What is the ICD-10 code for anterior spinal artery compression syndromes, cervical region?
The ICD-10-CM code for anterior spinal artery compression syndromes, cervical region is M47.012 (sometimes written as M47012). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is M47.012 (Anterior spinal artery compression syndromes) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report anterior spinal artery compression syndromes, cervical region on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M47.012 group to?
When anterior spinal artery compression syndromes, cervical region is the principal diagnosis on an inpatient stay, it groups to MS-DRG 551, 552, with relative weights from 0.9613 to 1.6761 depending on complications. Higher weights mean higher Medicare reimbursement.
Is M47.012 a CC or MCC?
CMS lists M47.012 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 22 closely related codes in its exclusion list.
What is the ICD-9 equivalent of M47.012?
Under the General Equivalence Mappings, anterior spinal artery compression syndromes, cervical region converts to ICD-9-CM 721.1 (cerv spondyl w myelopath). The mapping is approximate, so confirm the match fits the documentation.
