M43.8X1 – Other specified deforming dorsopathies, occipito-atlanto-axial region

ICD-10-CM 2027 diagnosis code · Deforming dorsopathies

Billable code

ICD-10-CM code M43.8X1
Code
M43.8X1 (claims format: M438X1)
Description
Other specified deforming dorsopathies, occipito-atlanto-axial region
Short description
Oth deforming dorsopathies, occipito-atlanto-axial region
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block
M40-M43 Deforming dorsopathies
Parent codes
M43 › M43.8 › M43.8X

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M43 – Other deforming dorsopathies

Excludes1 (not coded here):
  • 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.-)

M43.8 – Other specified deforming dorsopathies

Excludes2 (not included here):
  • kyphosis and lordosis (M40.-)
  • scoliosis (M41.-)

Related codes in M43.8X

Frequently asked questions

What is ICD-10 code M43.8X1?

M43.8X1 is the ICD-10-CM code for other specified deforming dorsopathies, occipito-atlanto-axial region, in the block M40-M43 (Deforming dorsopathies).

Is M43.8X1 a billable code?

Yes. M43.8X1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M43.8X1 belong to?

It belongs to category M43 – Other deforming dorsopathies.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.