M00 ICD-10-CA category: Pyogenic arthritis
M00 isn’t a code on its own. Choose one of the 50 codes beneath it, the one the documentation supports.
Official description
M00Pyogenic arthritis
ICD-10-CA · Canada
Codes in M00
M00 isn’t a code on its own. Open the group that matches what the note documents.
M00.0Staphylococcal arthritis and polyarthritis (10 codes)M00.1Pneumococcal arthritis and polyarthritis (10 codes)M00.2Other streptococcal arthritis and polyarthritis (10 codes)M00.8Arthritis and polyarthritis due to other specified bacterial agents (10 codes)M00.9Pyogenic arthritis, unspecified (10 codes)Notes for M00
As CIHI prints them, with any note M00 takes from the headings above it.
Includes
- Disorders affecting predominantly peripheral (limb) jointsFrom M00-M25 Arthropathies
Excludes
Conditions classified elsewhere.
- Infection and inflammatory reaction due to internal joint prosthesis (T84.5-)
- 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
- 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 M00 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M00-M25Arthropathies
- 3Block M00-M03Infectious arthropathies
- 4Category M00Pyogenic arthritis
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 M00 a valid ICD-10-CA code?
No. M00 (Pyogenic arthritis) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 50 codes; record the one the documentation supports.
Where is M00 in ICD-10-CA?
M00 sits under 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 M00?
ICD-10-CA lists Excludes, Note, Includes notes for M00, 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.