2026 ICD-10-CM Diagnosis Code M99.61Osseous and subluxation stenosis of intervertebral foramina of cervical region

ICD-10-CM Codes›M00–M99›M99›M99

ICD-10-CM M99.61
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M99.61 is a billable ICD-10-CM diagnosis code for osseous and subluxation stenosis of intervertebral foramina of 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 osseous and subluxation stenosis of cervical intervertebral foramina. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biomechanical lesions.

Code Identity

ICD-10-CM Code
M99.61
Billable Status
Yes — Valid for Submission
Code Describes
Osseous and subluxation stenosis of intervertebral foramina of cervical region
Short Description
Osseous and sublux stenosis of intvrt foramin of cerv region
Parent Code
M99.6
Osseous and subluxation stenosis of intervertebral foramina

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM99Biomechanical lesions, not elsewhere classified
CategoryM99Biomechanical lesions, not elsewhere classified
This CodeM99.61Osseous and subluxation stenosis of intervertebral foramina of cervical region

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Osseous and subluxation stenosis of cervical intervertebral foramina
  • Osseous and subluxation stenosis of intervertebral foramina
  • Stenosis of intervertebral foramina

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 MUS012
Biomechanical lesions
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 M99.61 to ICD-9-CMHistory

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

ICD-9-CM
723.0 Cervical spinal stenosis
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 M99.61Overview

Is M99.61 (Osseous and subluxation stenosis of intervertebral foramina) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report osseous and subluxation stenosis of intervertebral foramina of cervical region on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M99.61 group to?

When osseous and subluxation stenosis of intervertebral foramina of 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 M99.61?

Under the General Equivalence Mappings, osseous and subluxation stenosis of intervertebral foramina of cervical region converts to ICD-9-CM 723.0 (cervical spinal stenosis). The mapping is approximate, so confirm the match fits the documentation.