ICD-10-CM › M00-M99 › M65-M67 › M codes › M66
M66
Spontaneous rupture of synovium and tendon
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 6 more specific codes instead:
- M66.0 Rupture of popliteal cyst
- M66.1 Rupture of synovium (also a header)
- M66.2 Spontaneous rupture of extensor tendons (also a header)
- M66.3 Spontaneous rupture of flexor tendons (also a header)
- M66.8 Spontaneous rupture of other tendons (also a header)
- M66.9 Spontaneous rupture of unspecified tendon
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Spontaneous rupture of synovium and tendon
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
This code
Excludes2 - not included here
- rotator cuff syndrome (M75.1-)
- rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region
Includes
- rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength