2026 ICD-10-CM Diagnosis Code M47.12Other spondylosis with myelopathy, cervical region

ICD-10-CM Codes›M00–M99›M45-M49›M47

ICD-10-CM M47.12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M47.12 is a billable ICD-10-CM diagnosis code for other spondylosis with myelopathy, 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Spondylopathies/spondyloarthropathy (including infective).

Code Identity

ICD-10-CM Code
M47.12
Billable Status
Yes — Valid for Submission
Code Describes
Other spondylosis with myelopathy, cervical region
Short Description
Other spondylosis with myelopathy, cervical region
Same as the full description in the CMS dataset.
Parent Code
M47.1
Other spondylosis with myelopathy

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM45-M49Spondylopathies
CategoryM47Spondylosis
This CodeM47.12Other spondylosis with myelopathy, cervical region

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Central cord syndrome due to cervical spondylosis
  • Cervical spondylosis with vascular compression
  • Compression of cervical spinal cord
  • Myelopathy due to cervical spondylosis
  • Myelopathy due to multiple-level cervical spondylosis
  • Myelopathy due to single-level cervical spondylosis
  • Myelopathy due to two-level cervical spondylosis
  • Posterior cord syndrome due to cervical spondylosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 M47.12 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 M47.12Overview

What is the ICD-10 code for other spondylosis with myelopathy, cervical region?

The ICD-10-CM code for other spondylosis with myelopathy, cervical region is M47.12 (sometimes written as M4712). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is M47.12 (Other spondylosis with myelopathy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other spondylosis with myelopathy, cervical region on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M47.12 group to?

When other spondylosis with myelopathy, 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 M47.12 a CC or MCC?

CMS lists M47.12 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 M47.12?

Under the General Equivalence Mappings, other spondylosis with myelopathy, cervical region converts to ICD-9-CM 721.1 (cerv spondyl w myelopath). The mapping is approximate, so confirm the match fits the documentation.