M46Header code — not billable
Other inflammatory spondylopathies
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M46
- Effective date
- October 1, 2026
Related codes in category M46
M46.0Spinal enthesopathyM46.00Spinal enthesopathy, site unspecifiedYesM46.01Spinal enthesopathy, occipito-atlanto-axial regionYesM46.02Spinal enthesopathy, cervical regionYesM46.03Spinal enthesopathy, cervicothoracic regionYesM46.04Spinal enthesopathy, thoracic regionYesM46.05Spinal enthesopathy, thoracolumbar regionYesM46.06Spinal enthesopathy, lumbar regionYesM46.07Spinal enthesopathy, lumbosacral regionYesM46.08Spinal enthesopathy, sacral and sacrococcygeal regionYesM46.09Spinal enthesopathy, multiple sites in spineYesM46.1Sacroiliitis, not elsewhere classifiedYes
Frequently asked questions
What is ICD-10 code M46?
M46 is an ICD-10-CM diagnosis code for Other inflammatory spondylopathies.
Is M46 a billable code?
No. M46 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is M46 in?
M46 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M46 become effective?
M46 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M46?
M46 belongs to category M46, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.