ICD-10-CM 2027 diagnosis code
M46.0Spinal enthesopathy
M46.0 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About M46.0
M46.0 is the ICD-10-CM diagnosis code for spinal enthesopathy. It belongs to category M46 (other inflammatory spondylopathies), block M45-M49 (spondylopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.
Within M46 (other inflammatory spondylopathies), M46.0 is specifically for spinal enthesopathy. Related codes cover Sacroiliitis, not elsewhere classified (M46.1), osteomyelitis of vertebra (M46.2), infection of intervertebral disc (pyogenic) (M46.3), Discitis, unspecified (M46.4), other infective spondylopathies (M46.5), other specified inflammatory spondylopathies (M46.8) and unspecified inflammatory spondylopathy (M46.9).
To report this condition, pick the subcode that matches the documentation: M46.00 (site unspecified), M46.01 (occipito-atlanto-axial region), M46.02 (cervical region), M46.03 (cervicothoracic region), M46.04 (thoracic region), M46.05 (thoracolumbar region), M46.06 (lumbar region), M46.07 (lumbosacral region) and 2 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under M46.0
- M46.00Spinal enthesopathy, site unspecifiedBillable
- M46.01Spinal enthesopathy, occipito-atlanto-axial regionBillable
- M46.02Spinal enthesopathy, cervical regionBillable
- M46.03Spinal enthesopathy, cervicothoracic regionBillable
- M46.04Spinal enthesopathy, thoracic regionBillable
- M46.05Spinal enthesopathy, thoracolumbar regionBillable
- M46.06Spinal enthesopathy, lumbar regionBillable
- M46.07Spinal enthesopathy, lumbosacral regionBillable
- M46.08Spinal enthesopathy, sacral and sacrococcygeal regionBillable
- M46.09Spinal enthesopathy, multiple sites in spineBillable
Coding notes
- Disorder of ligamentous or muscular attachments of spine
Notes that apply from higher levels
Instructions written at a parent level also apply to M46.0.
Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.
Codes whose notes reference M46.0
- M77Excludes2
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about M46.0
Is M46.0 billable?
- No. M46.0 is a header code. Report one of its more specific subcodes instead.