2026 ICD-10-CM Diagnosis Code M41.42Neuromuscular scoliosis, cervical region

ICD-10-CM Codes›M00–M99›M40-M43›M41

ICD-10-CM M41.42
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M41.42 is a billable ICD-10-CM diagnosis code for neuromuscular scoliosis, 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 neuromuscular scoliosis of cervical spine. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Scoliosis and other postural dorsopathic deformities.

Code Identity

ICD-10-CM Code
M41.42
Billable Status
Yes — Valid for Submission
Code Describes
Neuromuscular scoliosis, cervical region
Short Description
Neuromuscular scoliosis, cervical region
Same as the full description in the CMS dataset.
Parent Code
M41.4
Neuromuscular scoliosis

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM40-M43Deforming dorsopathies
CategoryM41Scoliosis
This CodeM41.42Neuromuscular scoliosis, cervical region

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Neuromuscular scoliosis of cervical spine
  • Scoliosis of cervical spine

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 MUS022
Scoliosis and other postural dorsopathic deformities
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Scoliosis

Scoliosis causes a sideways curve of your backbone, or spine. These curves are often S- or C-shaped. Scoliosis is most common in late childhood and the early teens, when children grow fast. Girls are more likely to have it than boys. It can run in families. Symptoms include leaning to one side and having uneven shoulders and hips.

Read the full article at MedlinePlus

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

Convert M41.42 to ICD-9-CMHistory

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

ICD-9-CM
737.43 Scoliosis in oth dis
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 M41.42Overview

What is the ICD-10 code for neuromuscular scoliosis, cervical region?

The ICD-10-CM code for neuromuscular scoliosis, cervical region is M41.42 (sometimes written as M4142). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is M41.42 (Neuromuscular scoliosis) a billable code?

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

What MS-DRG does M41.42 group to?

When neuromuscular scoliosis, 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 M41.42?

Under the General Equivalence Mappings, neuromuscular scoliosis, cervical region converts to ICD-9-CM 737.43 (scoliosis in oth dis). The mapping is approximate, so confirm the match fits the documentation.