| ICD-10 Code | Description |
| M66.20 | Spontaneous rupture of extensor tendons, unspecified site |
| M66.211 | Spontaneous rupture of extensor tendons, right shoulder |
| M66.212 | Spontaneous rupture of extensor tendons, left shoulder |
| M66.219 | Spontaneous rupture of extensor tendons, unspecified shoulder |
| M66.221 | Spontaneous rupture of extensor tendons, right upper arm |
| M66.222 | Spontaneous rupture of extensor tendons, left upper arm |
| M66.229 | Spontaneous rupture of extensor tendons, unspecified upper arm |
| M66.231 | Spontaneous rupture of extensor tendons, right forearm |
| M66.232 | Spontaneous rupture of extensor tendons, left forearm |
| M66.239 | Spontaneous rupture of extensor tendons, unspecified forearm |
| M66.241 | Spontaneous rupture of extensor tendons, right hand |
| M66.242 | Spontaneous rupture of extensor tendons, left hand |
| M66.249 | Spontaneous rupture of extensor tendons, unspecified hand |
| M66.251 | Spontaneous rupture of extensor tendons, right thigh |
| M66.252 | Spontaneous rupture of extensor tendons, left thigh |
| M66.259 | Spontaneous rupture of extensor tendons, unspecified thigh |
| M66.261 | Spontaneous rupture of extensor tendons, right lower leg |
| M66.262 | Spontaneous rupture of extensor tendons, left lower leg |
| M66.269 | Spontaneous rupture of extensor tendons, unspecified lower leg |
| M66.271 | Spontaneous rupture of extensor tendons, right ankle and foot |
| M66.272 | Spontaneous rupture of extensor tendons, left ankle and foot |
| M66.279 | Spontaneous rupture of extensor tendons, unspecified ankle and foot |
| M66.28 | Spontaneous rupture of extensor tendons, other site |
| M66.29 | Spontaneous rupture of extensor tendons, multiple sites |
