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M35.5 ICD-10-CA code: Multifocal fibrosclerosis

M35.5 is the ICD-10-CA code for “Multifocal fibrosclerosis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M35.5

Multifocal fibrosclerosis

ICD-10-CA · Canada · Also written M355

Index terms

Entries in CIHI’s alphabetical index that lead to M35.5. Searching the index by the condition the note names is how coders reach this code.

  • Fibrosclerosis, multifocal

Notes for M35.5

As CIHI prints them, with any note M35.5 takes from the headings above it.

Includes

Excludes

Conditions classified elsewhere.

  • Reactive perforating collagenosis (L87.1)From M35 Other systemic involvement of connective tissue
  • 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 M35.5 sits

  1. 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. 2Block M30-M36Systemic connective tissue disorders
  3. 3Category M35Other systemic involvement of connective tissue
  4. 4Valid code M35.5Multifocal fibrosclerosis

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 M35.5 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M35.5 mean?

M35.5 is the ICD-10-CA code for “Multifocal fibrosclerosis” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M35.5 in ICD-10-CA?

M35.5 sits under M35 Other systemic involvement of connective tissue, within M30-M36 Systemic connective tissue disorders, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M35.5?

ICD-10-CA lists Excludes, Includes, Note notes for M35.5, 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 M35.5

M35.0Sicca syndrome [Sjögren]M35.1Other overlap syndromesM35.2Behçet's diseaseM35.3Polymyalgia rheumaticaM35.4Diffuse (eosinophilic) fasciitisM35.6Relapsing panniculitis [Weber-Christian]M35.7Hypermobility syndromeM35.8Other specified systemic involvement of connective tissueM35.9Systemic involvement of connective tissue, unspecified site