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M79.01 ICD-10-CA code: Rheumatism, unspecified shoulder region

M79.01 is the ICD-10-CA code for “Rheumatism, unspecified shoulder region” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M79.01

Rheumatism, unspecified shoulder region

Short description: Rheumatism unspecified shoulder region

ICD-10-CA · Canada · Also written M7901

Notes for M79.01

As CIHI prints them, with any note M79.01 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Fibromyalgia (M79.7)palindromic rheumatism (M12.3)From M79.0 Rheumatism, unspecified
  • Soft tissue pain, psychogenic (F45.4)From M79 Other soft tissue disorders, not elsewhere classified
  • 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 M79.0 Rheumatism, unspecified
  • 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 M79.01 sits

  1. 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. 2Block M60-M79Soft tissue disorders
  3. 3Block M70-M79Other soft tissue disorders
  4. 4Category M79Other soft tissue disorders, not elsewhere classified
  5. 5Subcategory M79.0Rheumatism, unspecified
  6. 6Valid code M79.01Rheumatism, unspecified shoulder region

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 M79.01 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M79.01 mean?

M79.01 is the ICD-10-CA code for “Rheumatism, unspecified shoulder region” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M79.01 in ICD-10-CA?

M79.01 sits under M79.0 Rheumatism, unspecified, within M79 Other soft tissue disorders, not elsewhere classified, within M70-M79 Other soft tissue disorders, within M60-M79 Soft tissue disorders, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M79.01?

ICD-10-CA lists Note, Excludes notes for M79.01, 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 M79.01

M79.00Rheumatism, unspecified, multiple sitesM79.02Rheumatism, unspecified, upper armM79.03Rheumatism, unspecified, forearmM79.04Rheumatism, unspecified, handM79.05Rheumatism, unspecified, pelvic region and thighM79.06Rheumatism, unspecified, lower legM79.07Rheumatism, unspecified, ankle and footM79.08Rheumatism, unspecified, other siteM79.09Rheumatism, unspecified, unspecified site