M42.1 ICD-10-CA subcategory: Adult osteochondrosis of spine
M42.1 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.
Official description
M42.1Adult osteochondrosis of spine
ICD-10-CA · Canada · Also written M421
Codes in M42.1
M42.1 isn’t a code on its own. Open the code that matches what the note documents.
M42.10Adult osteochondrosis of spine, multiple sites in spineM42.11Adult osteochondrosis of spine, occipito-atlanto-axial regionM42.12Adult osteochondrosis of spine, cervical regionM42.13Adult osteochondrosis of spine, cervicothoracic regionM42.14Adult osteochondrosis of spine, thoracic regionM42.15Adult osteochondrosis of spine, thoracolumbar regionM42.16Adult osteochondrosis of spine, lumbar regionM42.17Adult osteochondrosis of spine, lumbosacral regionM42.18Adult osteochondrosis of spine, sacral and sacrococcygeal regionM42.19Adult osteochondrosis of spine, unspecified siteNotes for M42.1
As CIHI prints them, with any note M42.1 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- 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 M42.1 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M40-M54Dorsopathies
- 3Block M40-M43Deforming dorsopathies
- 4Category M42Spinal osteochondrosis
- 5Subcategory M42.1Adult osteochondrosis of spine
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 M42.1 a valid ICD-10-CA code?
No. M42.1 (Adult osteochondrosis of spine) is a subcategory heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.
Where is M42.1 in ICD-10-CA?
M42.1 sits under M42 Spinal osteochondrosis, within 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 M42.1?
ICD-10-CA lists Note, Excludes notes for M42.1, 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.