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M90.3 ICD-10-CA code: Osteonecrosis in caisson disease

M90.3 is the ICD-10-CA code for “Osteonecrosis in caisson disease” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M90.3

Osteonecrosis in caisson disease

ICD-10-CA · Canada · Also written M903

Notes for M90.3

As CIHI prints them, with any note M90.3 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Postprocedural osteopathies (M96.-)From M86-M90 Other osteopathies
  • 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 M90.3 sits

  1. 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. 2Block M80-M94Osteopathies and chondropathies
  3. 3Block M86-M90Other osteopathies
  4. 4Category M90Osteopathies in diseases classified elsewhere
  5. 5Valid code M90.3Osteonecrosis in caisson disease

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 M90.3 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M90.3 mean?

M90.3 is the ICD-10-CA code for “Osteonecrosis in caisson disease” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M90.3 in ICD-10-CA?

M90.3 sits under M90 Osteopathies in diseases classified elsewhere, within M86-M90 Other osteopathies, within M80-M94 Osteopathies and chondropathies, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M90.3?

ICD-10-CA lists Excludes, Note notes for M90.3, 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 M90.3

M90.0Tuberculosis of boneM90.1Periostitis in other infectious diseases classified elsewhereM90.2Osteopathy in other infectious diseases classified elsewhereM90.4Osteonecrosis due to haemoglobinopathyM90.5Osteonecrosis in other diseases classified elsewhereM90.6Osteitis deformans in neoplastic diseaseM90.7Fracture of bone in neoplastic diseaseM90.8Osteopathy in other diseases classified elsewhere