M43 ICD-10-CA category: Other deforming dorsopathies
M43 isn’t a code on its own. Choose one of the 62 codes beneath it, the one the documentation supports.
Official description
M43Other deforming dorsopathies
ICD-10-CA · Canada
Codes in M43
M43 isn’t a code on its own. Open the group that matches what the note documents.
M43.0Spondylolysis (10 codes)M43.1Spondylolisthesis (10 codes)M43.2Other fusion of spine (10 codes)M43.3Recurrent atlantoaxial subluxation with myelopathyM43.4Other recurrent atlantoaxial subluxationM43.5Other recurrent vertebral subluxation (9 codes)M43.6TorticollisM43.8Other specified deforming dorsopathies (10 codes)M43.9Deforming dorsopathy, unspecified (10 codes)Notes for M43
As CIHI prints them, with any note M43 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- 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-M81)• Paget's disease of bone [osteitis deformans] (M88.-)
- Certain:• conditions originating in the perinatal period (P00-P96)• disorders of the temporomandibular joint (K07.6)• infectious and parasitic diseases (A00-B99)compartment syndrome (T79.6)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
Note
- The following fifth characters represent the following sites of involvement:0 Multiple sites1 Shoulder region: clavical , scapula — joint acromioclavicular, glenohumeral, sternoclavicular2 Upper arm: humerus — elbow joint,3 Forearm: radius , ulna — wrist joint,4 Hand: carpus, fingers, metacarpus — joints between these bones,5 Pelvic region and thigh: buttock , femur , pelvis — joint hip , sacroiliac6 Lower leg: fibula , tibia — knee joint7 Ankle and foot: metatarsus, tarsus, toes — other joints in foot8 Other:head neck ribs skull trunk vertebral column9 Site unspecifiedFrom Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
Where M43 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M40-M54Dorsopathies
- 3Block M40-M43Deforming dorsopathies
- 4Category M43Other deforming dorsopathies
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is M43 a valid ICD-10-CA code?
No. M43 (Other deforming dorsopathies) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 62 codes; record the one the documentation supports.
Where is M43 in ICD-10-CA?
M43 sits under M40-M43 Deforming dorsopathies, within M40-M54 Dorsopathies, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).
What coding notes apply to M43?
ICD-10-CA lists Excludes, Note notes for M43, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.