M35 ICD-10-CA category: Other systemic involvement of connective tissue
M35 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.
Official description
M35Other systemic involvement of connective tissue
ICD-10-CA · Canada
Codes in M35
M35 isn’t a code on its own. Open the code that matches what the note documents.
M35.0Sicca syndrome [Sjögren]M35.1Other overlap syndromesM35.2Behçet's diseaseM35.3Polymyalgia rheumaticaM35.4Diffuse (eosinophilic) fasciitisM35.5Multifocal fibrosclerosisM35.6Relapsing panniculitis [Weber-Christian]M35.7Hypermobility syndromeM35.8Other specified systemic involvement of connective tissueM35.9Systemic involvement of connective tissue, unspecified siteNotes for M35
As CIHI prints them, with any note M35 takes from the headings above it.
Includes
- Autoimmune disease:• NOS• systemiccollagen (vascular) disease:• NOS• systemicFrom M30-M36 Systemic connective tissue disorders
Excludes
Conditions classified elsewhere.
- Reactive perforating collagenosis (L87.1)
- Antiphospholipid syndrome (D68.6)autoimmune disease, single organ or single cell-type (code to relevant condition category)From M30-M36 Systemic connective tissue disorders
- 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 M35 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M30-M36Systemic connective tissue disorders
- 3Category M35Other systemic involvement of connective tissue
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 M35 a valid ICD-10-CA code?
No. M35 (Other systemic involvement of connective tissue) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.
Where is M35 in ICD-10-CA?
M35 sits under M30-M36 Systemic connective tissue disorders, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).
What coding notes apply to M35?
ICD-10-CA lists Excludes, Includes, Note notes for M35, 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.