M66.8

ICD-10Non-billable category

Spontaneous rupture of other tendons

Official ICD-10-CM descriptor (FY2026)

Spontaneous rupture of other tendons

M66.8 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.

ICD-10-CM FY2026 defines 10 codes beneath M66.8. See the ICD-10-CM index for what this site publishes.

Related codes in M66

Where this code sits

Parent code
M66

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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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