2026 ICD-10-CM Diagnosis Code M47.012Anterior spinal artery compression syndromes, cervical region

ICD-10-CM Codes›M00–M99›M45-M49›M47

ICD-10-CM M47.012
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

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. 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

ICD-10-CM Code
M47.012
Billable Status
Yes — Valid for Submission
Code Describes
Anterior spinal artery compression syndromes, cervical region
Short Description
Anterior spinal artery comprsn syndromes, cervical region
Parent Code
M47.01
Anterior spinal artery compression syndromes

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM45-M49Spondylopathies
CategoryM47Spondylosis
This CodeM47.012Anterior spinal artery compression syndromes, cervical region

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.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Syndrome
      • anterior
        • spinal artery
          • compression
            • cervical region

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS011
Spondylopathies/spondyloarthropathy (including infective)
Default principal diagnosis: inpatient Yes · outpatient Yes

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M47.012 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
721.1 Cerv spondyl w myelopath
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M47.012Overview

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.

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.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.