M62.5A1 – Muscle wasting and atrophy, not elsewhere classified, back, thoracic

ICD-10-CM 2027 diagnosis code · Disorders of muscles

Billable code

ICD-10-CM code M62.5A1

Code: M62.5A1 (claims format: M625A1)
Description: Muscle wasting and atrophy, not elsewhere classified, back, thoracic
Short description: Muscle wasting and atrophy, NEC, back, thoracic
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M60-M63 Disorders of muscles
Parent codes: M62 › M62.5 › M62.5A

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M62 – Other disorders of muscle

Excludes1 (not coded here):

alcoholic myopathy (G72.1)
cramp and spasm (R25.2)
drug-induced myopathy (G72.0)
myalgia (M79.1-)
stiff-man syndrome (G25.82)

Excludes2 (not included here):

nontraumatic hematoma of muscle (M79.81)

M62.5 – Muscle wasting and atrophy, not elsewhere classified

Applicable to:

Disuse atrophy NEC

Excludes1 (not coded here):

neuralgic amyotrophy (G54.5)
progressive muscular atrophy (G12.21)
sarcopenia (M62.84)

Excludes2 (not included here):

pelvic muscle wasting (N81.84)

Block M60-M63

Excludes1 (not coded here):

dermatopolymyositis (M33.-)
myopathy in amyloidosis (E85.-)
myopathy in polyarteritis nodosa (M30.0)
myopathy in rheumatoid arthritis (M05.32)
myopathy in scleroderma (M34.-)
myopathy in Sjögren's syndrome (M35.03)
myopathy in systemic lupus erythematosus (M32.-)

Excludes2 (not included here):

muscular dystrophies and myopathies (G71-G72)

Index terms for M62.5A1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Atrophy, atrophic, muscle, muscular, back, thoracic

Related codes in M62.5A

Frequently asked questions

What is ICD-10 code M62.5A1?

M62.5A1 is the ICD-10-CM code for muscle wasting and atrophy, not elsewhere classified, back, thoracic, in the block M60-M63 (Disorders of muscles).

Is M62.5A1 a billable code?

Yes. M62.5A1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M62.5A1 belong to?

It belongs to category M62 – Other disorders of muscle.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.