2026 ICD-10-CM Diagnosis Code M99.63Osseous and subluxation stenosis of intervertebral foramina of lumbar region

ICD-10-CM Codes›M00–M99›M99›M99

ICD-10-CM M99.63
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M99.63 is a billable ICD-10-CM diagnosis code for osseous and subluxation stenosis of intervertebral foramina of lumbar 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 intervertebral foramina. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biomechanical lesions.

This medical diagnosis code is frequently used in Orthopedics medical specialties to designate conditions such spinal stenosis of the lumbar region.

Code Identity

ICD-10-CM Code
M99.63
Billable Status
Yes — Valid for Submission
Code Describes
Osseous and subluxation stenosis of intervertebral foramina of lumbar region
Short Description
Osseous and sublux stenos of intvrt foramin of lumbar 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 CodeM99.63Osseous and subluxation stenosis of intervertebral foramina of lumbar region

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

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

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.

    • Stenosis, stenotic(cicatricial)
      • intervertebral foramina
        • osseous
          • lumbar region
    • Stenosis, stenotic(cicatricial)
      • intervertebral foramina
        • osseous
          • lumbosacral

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

Spinal Stenosis

Your spine, or backbone, protects your spinal cord and allows you to stand and bend. Spinal stenosis causes narrowing in your spine. The narrowing puts pressure on your nerves and spinal cord and can cause pain.

Read the full article at MedlinePlus

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

Convert M99.63 to ICD-9-CMHistory

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

ICD-9-CM
724.02 Spin sten,lumbr wo claud
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 M99.63Overview

Is M99.63 (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 lumbar region on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M99.63 group to?

When osseous and subluxation stenosis of intervertebral foramina of lumbar 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 M99.63?

Under the General Equivalence Mappings, osseous and subluxation stenosis of intervertebral foramina of lumbar region converts to ICD-9-CM 724.02 (spin sten,lumbr wo claud). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.