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M79.A

⚠ Non-billable (Header)

Nontraumatic compartment syndrome

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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📋 Code Instructions

  • • Code first: , if applicable, associated postprocedural complication

❌ Excludes1

direct

Cannot be coded with M79.A

  • • compartment syndrome NOS (T79.A-)
  • • fibromyalgia (M79.7)
  • • nontraumatic ischemic infarction of muscle (M62.2-)
  • • traumatic compartment syndrome (T79.A-)

❌ Excludes1

inherited from M79

Rules from parent category M79: Other and unspecified soft tissue disorders, not elsewhere classified

  • • psychogenic rheumatism (F45.8)
  • • soft tissue pain, psychogenic (F45.41)

Child Codes (4)

M79.A1Nontraumatic compartment syndrome of upper extremityM79.A2Nontraumatic compartment syndrome of lower extremityM79.A3Nontraumatic compartment syndrome of abdomenM79.A9Nontraumatic compartment syndrome of other sites

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Code Information

CodeM79.A
BillableNo — Header code
ParentM79
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes16 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)