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M02.86 ICD-10-CA code: Other reactive arthropathies, lower leg

M02.86 is the ICD-10-CA code for “Other reactive arthropathies, lower leg” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M02.86

Other reactive arthropathies, lower leg

Short description: Other reactive arthropathies lower leg

ICD-10-CA · Canada · Also written M0286

Notes for M02.86

As CIHI prints them, with any note M02.86 takes from the headings above it.

Includes

Excludes

Conditions classified elsewhere.

  • Behçet's disease (M35.2)rheumatic fever (I00)From M02 Reactive arthropathies
  • 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

  • [To review the anatomical site captured in the 5th character subclassification see Chapter XIII]From M02.8 Other reactive arthropathies
  • This block comprises arthropathies due to microbiological agents. Distinction is made between the following types of etiological relationship:a) direct infection of joint, where organisms invade synovial tissue and microbial antigen is present in the joint;b) indirect infection, which may be of two types: a reactive arthropathy, where microbial infection of the body is established but neither organisms nor antigens can be identified in the joint, and a postinfective arthropathy, where microbial antigen is present but recovery of an organism is inconstant and evidence of local multiplication is lacking.From M00-M03 Infectious arthropathies
  • 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 M02.86 sits

  1. 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. 2Block M00-M25Arthropathies
  3. 3Block M00-M03Infectious arthropathies
  4. 4Category M02Reactive arthropathies
  5. 5Subcategory M02.8Other reactive arthropathies
  6. 6Valid code M02.86Other reactive arthropathies, lower leg

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 M02.86 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M02.86 mean?

M02.86 is the ICD-10-CA code for “Other reactive arthropathies, lower leg” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M02.86 in ICD-10-CA?

M02.86 sits under M02.8 Other reactive arthropathies, within M02 Reactive arthropathies, within M00-M03 Infectious arthropathies, within M00-M25 Arthropathies, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M02.86?

ICD-10-CA lists Note, Excludes, Includes notes for M02.86, 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 M02.86

M02.80Other reactive arthropathies, multiple sitesM02.81Other reactive arthropathies, shoulder regionM02.82Other reactive arthropathies, upper armM02.83Other reactive arthropathies, forearmM02.84Other reactive arthropathies, handM02.85Other reactive arthropathies, pelvic region and thighM02.87Other reactive arthropathies, ankle and footM02.88Other reactive arthropathies, other siteM02.89Other reactive arthropathies, unspecified site