ICD-10-CM 2027 diagnosis code
M43.8XOther specified deforming dorsopathies
M43.8X is a header code, so it can't be reported by itself. Choose one of the 9 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 M43.8X
M43.8X is the ICD-10-CM diagnosis code for other specified deforming dorsopathies. It belongs to category M43 (other deforming dorsopathies), block M40-M43 (deforming dorsopathies) 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 9 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: M43.8X1 (occipito-atlanto-axial region), M43.8X2 (cervical region), M43.8X3 (cervicothoracic region), M43.8X4 (thoracic region), M43.8X5 (thoracolumbar region), M43.8X6 (lumbar region), M43.8X7 (lumbosacral region), M43.8X8 (sacral and sacrococcygeal region) and 1 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 M43.8X
- M43.8X1Other specified deforming dorsopathies, occipito-atlanto-axial regionBillable
- M43.8X2Other specified deforming dorsopathies, cervical regionBillable
- M43.8X3Other specified deforming dorsopathies, cervicothoracic regionBillable
- M43.8X4Other specified deforming dorsopathies, thoracic regionBillable
- M43.8X5Other specified deforming dorsopathies, thoracolumbar regionBillable
- M43.8X6Other specified deforming dorsopathies, lumbar regionBillable
- M43.8X7Other specified deforming dorsopathies, lumbosacral regionBillable
- M43.8X8Other specified deforming dorsopathies, sacral and sacrococcygeal regionBillable
- M43.8X9Other specified deforming dorsopathies, site unspecifiedBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to M43.8X.
› From M43 Other deforming dorsopathies
- congenital spondylolysis and spondylolisthesis (Q76.2)
- hemivertebra (Q76.3-Q76.4)
- Klippel-Feil syndrome (Q76.1)
- lumbarization and sacralization (Q76.4)
- platyspondylisis (Q76.4)
- spina bifida occulta (Q76.0)
- spinal curvature in osteoporosis (M80.-)
- spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)
Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.
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 M43.8X
Is M43.8X billable?
- No. M43.8X is a header code. Report one of its more specific subcodes instead.