M79.A

ICD-10Non-billable category

Nontraumatic compartment syndrome

Official ICD-10-CM descriptor (FY2026)

Nontraumatic compartment syndrome

M79.A is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

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

Code first

Sequence the underlying condition before this code.

  • , if applicable, associated postprocedural complication

ICD-10-CM FY2026 defines 4 codes beneath M79.A. See the ICD-10-CM index for what this site publishes.

Related codes in M79

Where this code sits

Parent code
M79

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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