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M47.81 ICD-10-CA code: Other spondylosis, occipito-atlanto-axial region

M47.81 is the ICD-10-CA code for “Other spondylosis, occipito-atlanto-axial region” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M47.81

Other spondylosis, occipito-atlanto-axial region

Short description: Other spondylosis ocptatlntaxl rgn

ICD-10-CA · Canada · Also written M4781

Notes for M47.81

As CIHI prints them, with any note M47.81 takes from the headings above it.

Includes

  • cervical spondylosis, lumbosacral spondylosis, thoracic spondylosis — without myelopathy or radiculopathyFrom M47.8 Other spondylosis
  • Arthrosis or osteoarthritis of spinedegeneration of facet jointsFrom M47 Spondylosis

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 M47.81 sits

  1. 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. 2Block M40-M54Dorsopathies
  3. 3Block M45-M49Spondylopathies
  4. 4Category M47Spondylosis
  5. 5Subcategory M47.8Other spondylosis
  6. 6Valid code M47.81Other spondylosis, occipito-atlanto-axial region

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.

See M47.81 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M47.81 mean?

M47.81 is the ICD-10-CA code for “Other spondylosis, occipito-atlanto-axial region” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M47.81 in ICD-10-CA?

M47.81 sits under M47.8 Other spondylosis, within M47 Spondylosis, within M45-M49 Spondylopathies, within M40-M54 Dorsopathies, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M47.81?

ICD-10-CA lists Includes, Note, Excludes notes for M47.81, 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.

Codes beside M47.81

M47.80Other spondylosis, multiple sites in spineM47.82Other spondylosis, cervical regionM47.83Other spondylosis, cervicothoracic regionM47.84Other spondylosis, thoracic regionM47.85Other spondylosis, thoracolumbar regionM47.86Other spondylosis, lumbar regionM47.87Other spondylosis, lumbosacral regionM47.88Other spondylosis, sacral and sacrococcygeal regionM47.89Other spondylosis, unspecified site