M62.56 ICD-10-CA code: Muscle wasting and atrophy, not elsewhere classified, lower leg

M62.56 is the ICD-10-CA code for “Muscle wasting and atrophy, not elsewhere classified, lower leg” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

M62.56

Muscle wasting and atrophy, not elsewhere classified, lower leg

Short description: Muscle wasting & atrophy NEC lower leg

ICD-10-CA · Canada · Also written M6256

Notes for M62.56

As CIHI prints them, with any note M62.56 takes from the headings above it.

Includes

Disuse atrophy NECsarcopeniaFrom M62.5 Muscle wasting and atrophy, not elsewhere classified

Excludes

Conditions classified elsewhere.

Cramp and spasm (R25.2)myalgia (M79.1)myopathy:• alcoholic (G72.1)• drug-induced (G72.0)stiff-man syndrome (G25.8)From M62 Other disorders of muscle
Dermatopolymyositis (M33.-)muscular dystrophies and myopathies (G71-G72)myopathy in:• amyloidosis (E85.-)• polyarteritis nodosa (M30.0)• rheumatoid arthritis (M05.3)• scleroderma (M34.-)• Sjögren's syndrome (M35.0)• systemic lupus erythematosus (M32.-)From M60-M63 Disorders of muscles
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 M62.5 Muscle wasting and atrophy, not elsewhere classified
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 M62.56 sits

1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
2Block M60-M79Soft tissue disorders
3Block M60-M63Disorders of muscles
4Category M62Other disorders of muscle
5Subcategory M62.5Muscle wasting and atrophy, not elsewhere classified
6Valid code M62.56Muscle wasting and atrophy, not elsewhere classified, 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 M62.56 in the CIHI source

Frequently asked questions

What does ICD-10-CA code M62.56 mean?

M62.56 is the ICD-10-CA code for “Muscle wasting and atrophy, not elsewhere classified, lower leg” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is M62.56 in ICD-10-CA?

M62.56 sits under M62.5 Muscle wasting and atrophy, not elsewhere classified, within M62 Other disorders of muscle, within M60-M63 Disorders of muscles, within M60-M79 Soft tissue disorders, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).

What coding notes apply to M62.56?

ICD-10-CA lists Note, Includes, Excludes notes for M62.56, 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.

View M62.5