2026 ICD-10-CM Diagnosis Code M41.9Scoliosis, unspecified
ICD-10-CM Codes›M00–M99›M40-M43›M41
- Billable — Valid for Submission
- Chronic Condition
M41.9 is a billable ICD-10-CM diagnosis code for scoliosis, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 456 through 458, 551 through 552. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Scoliosis and other postural dorsopathic deformities.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired scoliosis
- Blindness, scoliosis, arachnodactyly syndrome
- Corkscrewing
- Deformity of chest due to kyphoscoliosis
- Dextroscoliosis
- Early-onset scoliosis deformity of spine
- Horizontal gaze palsy
- Horizontal gaze palsy with progressive scoliosis
- Kyphoscoliosis, lateral tongue atrophy, hereditary spastic paraplegia syndrome
- Lordosis and scoliosis deformity of spine
- Postural scoliosis
- Restrictive lung disease
- Restrictive lung disease due to kyphoscoliosis
- Scoliosis deformity of spine
- Scoliosis due to and following infection
- Scoliosis of cervical spine
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Kyphoscoliosis, kyphoscoliotic (acquired) See Also: Scoliosis; M41.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Scoliosis
an appreciable lateral deviation in the normally straight vertical line of the spine. (dorland, 27th ed)Congenital Postural Scoliosis
abnormal sideways curvature of the spine that is present at birth.Postural Scoliosis
usually mild scoliosis that disappears when the person bends forward or sideways. the spine is structurally normal.Restrictive Lung Disease
decreased lung volume and inadequate ventilation due to parenchymal lung disorders (e.g., interstitial pulmonary fibrosis) or extrapulmonary disorders (e.g., scoliosis). patients present with shortness of breath and cough.
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 M41.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M41.9Overview
What is the ICD-10 code for scoliosis, unspecified?
The ICD-10-CM code for scoliosis, unspecified is M41.9 (sometimes written as M419). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is M41.9 (Scoliosis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report scoliosis, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M41.9 group to?
When scoliosis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 456, 457, 458, 551, 552, with relative weights from 0.9613 to 8.4034 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M41.9?
Under the General Equivalence Mappings, scoliosis, unspecified converts to ICD-9-CM 737.39 (scoliosis NEC). The mapping is approximate, so confirm the match fits the documentation.
