M66
Spontaneous rupture of synovium and tendon
- Release
- FY 2027
- Effective
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files.
Includes
rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength
Excludes2
rotator cuff syndrome ( M75.1- )
Excludes2
rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region
More Specific Codes
6 codes under M66
- M66.0 Rupture of popliteal cyst Billable
- M66.1 Rupture of synovium Has subcodes
- M66.2 Spontaneous rupture of extensor tendons Has subcodes
- M66.3 Spontaneous rupture of flexor tendons Has subcodes
- M66.8 Spontaneous rupture of other tendons Has subcodes
- M66.9 Spontaneous rupture of unspecified tendon Billable
Version History
How M66 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentSpontaneous rupture of synovium and tendon
-
FY 2026 Effective
UnchangedSpontaneous rupture of synovium and tendon
Related Codes
Codes whose official notes reference M66
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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