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ICD-10-CM 2027 diagnosis code

M43.8Other specified deforming dorsopathies

Not billable — use a more specific code

M43.8 is a header code, so it can't be reported by itself. Choose one of the 1 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 M43.8

M43.8 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 1 subcodes must be used instead.

Within M43, choose M43.8 (Other specified deforming dorsopathies) only when documentation doesn't support a more specific option: Spondylolysis (M43.0), spondylolisthesis (M43.1), fusion of spine (M43.2), recurrent atlantoaxial dislocation with myelopathy (M43.3), other recurrent atlantoaxial dislocation (M43.4), other recurrent vertebral dislocation (M43.5), torticollis (M43.6) and deforming dorsopathy, unspecified (M43.9).

To report this condition, pick the subcode that matches the documentation: M43.8X (dorsopathies).

The conditions in its Excludes2 note aren't part of M43.8, but may be coded alongside it if the patient has both: kyphosis and lordosis (M40.-) and scoliosis (M41.-).

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 M43.8

Coding notes

Excludes2Not included here — may be reported together if both conditions exist
  • kyphosis and lordosis (M40.-)
  • scoliosis (M41.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to M43.8.

› From M43 Other deforming dorsopathies
Excludes1
  • 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.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to M43.8.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M43.8

Is M43.8 billable?

No. M43.8 is a header code. Report one of its more specific subcodes instead.