2026 ICD-10-CM Diagnosis Code M96.5Postradiation scoliosis

ICD-10-CM Codes›M00–M99›M96›M96

ICD-10-CM M96.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M96.5 is a billable ICD-10-CM diagnosis code for postradiation scoliosis. 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. Coders also document this condition as scoliosis due to radiation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative musculoskeletal system complication and Scoliosis and other postural dorsopathic deformities.

Code Identity

ICD-10-CM Code
M96.5
Billable Status
Yes — Valid for Submission
Code Describes
Postradiation scoliosis
Short Description
Postradiation scoliosis
Same as the full description in the CMS dataset.
Parent Code
M96
Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
CategoryM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
This CodeM96.5Postradiation scoliosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Scoliosis due to radiation

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 MUS037
Postprocedural or postoperative musculoskeletal system complication
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR MUS022
Scoliosis and other postural dorsopathic deformities
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Radiation Exposure

Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. There are two types:

The full article covers:

  • What is radiation?
  • What are the sources of radiation exposure?
  • What are the health effects of radiation exposure?
  • What are the treatments for acute radiation sickness?
  • How can radiation exposure be prevented?

Read the full article at MedlinePlus

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

Convert M96.5 to ICD-9-CMHistory

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

ICD-9-CM
737.33 Radiation scoliosis
Exact Match The mapping is direct, with no qualifiers.

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 M96.5Overview

What is the ICD-10 code for postradiation scoliosis?

The ICD-10-CM code for postradiation scoliosis is M96.5 (sometimes written as M965). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is M96.5 a billable code?

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

What MS-DRG does M96.5 group to?

When postradiation scoliosis 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 M96.5?

Under the General Equivalence Mappings, postradiation scoliosis converts to ICD-9-CM 737.33 (radiation scoliosis). The mapping is a direct match.