All ICD10 Codes

M43

Non-Billable
ChapterM00–M99
Rankcategory
Description

Other deforming dorsopathies

About ICD-10-CM code M43

M43 is the ICD-10-CM diagnosis code for Other deforming dorsopathies. It sits in M00-M99 Diseases of the Musculoskeletal System and Connective Tissue, within Deforming dorsopathies (M40-M43). M43 is not billable on its own, coders must choose one of its more specific child codes instead.

Use a more specific code (4 billable, 5 non-billable)
M43.0Spondylolysishas subcodesM43.1Spondylolisthesishas subcodesM43.2Fusion of spinehas subcodesM43.3Recurrent atlantoaxial dislocation with myelopathyM43.4Other recurrent atlantoaxial dislocationM43.5Other recurrent vertebral dislocationhas subcodesM43.6TorticollisM43.8Other specified deforming dorsopathieshas subcodesM43.9Deforming dorsopathy, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

CH13 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • 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.-)

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M40-M43Deforming dorsopathies (M40-M43)
M43Other deforming dorsopathiesNot billable
M43.0SpondylolysisSubcodes
M43.1SpondylolisthesisSubcodes
M43.2Fusion of spineSubcodes
M43.3Recurrent atlantoaxial dislocation with myelopathyBillable
M43.4Other recurrent atlantoaxial dislocationBillable
M43.5Other recurrent vertebral dislocationSubcodes
M43.6TorticollisBillable
M43.8Other specified deforming dorsopathiesSubcodes
M43.9Deforming dorsopathy, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M43:

chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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