2026 ICD-10-CM Diagnosis Code M48.05Spinal stenosis, thoracolumbar region

ICD-10-CM Codes›M00–M99›M45-M49›M48

ICD-10-CM M48.05
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M48.05 is a billable ICD-10-CM diagnosis code for spinal stenosis, thoracolumbar 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 spinal stenosis of lumbar region. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Spondylopathies/spondyloarthropathy (including infective).

Code Identity

ICD-10-CM Code
M48.05
Billable Status
Yes — Valid for Submission
Code Describes
Spinal stenosis, thoracolumbar region
Short Description
Spinal stenosis, thoracolumbar region
Same as the full description in the CMS dataset.
Parent Code
M48.0
Spinal stenosis

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM45-M49Spondylopathies
CategoryM48Other spondylopathies
This CodeM48.05Spinal stenosis, thoracolumbar region

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Spinal stenosis of lumbar region
  • Spinal stenosis of thoracic region
  • Spinal stenosis of thoracolumbar region

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)
      • spinal
        • thoracolumbar 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

Clinical InformationClinical

  • Spinal Stenosis

    narrowing of the spinal canal.

  • Lumbar Spinal Stenosis

    spinal stenosis in the lumbar region.

  • Spinal Stenosis

    narrowing of the spinal canal. it may lead to compression of the spinal cord or nerve roots resulting in neck or back pain, and/or numbness or weakness in the extremities.

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 M48.05 to ICD-9-CMHistory

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

ICD-9-CM
724.01 Spinal stenosis-thoracic
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 M48.05Overview

Is M48.05 (Spinal stenosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report spinal stenosis, thoracolumbar region on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M48.05 group to?

When spinal stenosis, thoracolumbar 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 M48.05?

Under the General Equivalence Mappings, spinal stenosis, thoracolumbar region converts to ICD-9-CM 724.01 (spinal stenosis-thoracic). 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.