M86 ICD-10-CA category: Osteomyelitis
M86 isn’t a code on its own. Choose one of the 90 codes beneath it, the one the documentation supports.
Official description
M86Osteomyelitis
ICD-10-CA · Canada
Codes in M86
M86 isn’t a code on its own. Open the group that matches what the note documents.
M86.0Acute haematogenous osteomyelitis (10 codes)M86.1Other acute osteomyelitis (10 codes)M86.2Subacute osteomyelitis (10 codes)M86.3Chronic multifocal osteomyelitis (10 codes)M86.4Chronic osteomyelitis with draining sinus (10 codes)M86.5Other chronic haematogenous osteomyelitis (10 codes)M86.6Other chronic osteomyelitis (10 codes)M86.8Other osteomyelitis (10 codes)M86.9Osteomyelitis, unspecified (10 codes)Notes for M86
As CIHI prints them, with any note M86 takes from the headings above it.
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (B95-B97) to identify infectious agent.
Excludes
Conditions classified elsewhere.
- Osteomyelitis (of):• due to salmonella (A02† M90.2*)• jaw (K10.2)• vertebra (M46.2)
- 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 M86 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M80-M94Osteopathies and chondropathies
- 3Block M86-M90Other osteopathies
- 4Category M86Osteomyelitis
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 M86 a valid ICD-10-CA code?
No. M86 (Osteomyelitis) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 90 codes; record the one the documentation supports.
Where is M86 in ICD-10-CA?
M86 sits under 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 M86?
ICD-10-CA lists Use additional code, Excludes, Note notes for M86, 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.