| ICD-10 Code | Description |
| M66.30 | Spontaneous rupture of flexor tendons, unspecified site |
| M66.311 | Spontaneous rupture of flexor tendons, right shoulder |
| M66.312 | Spontaneous rupture of flexor tendons, left shoulder |
| M66.319 | Spontaneous rupture of flexor tendons, unspecified shoulder |
| M66.321 | Spontaneous rupture of flexor tendons, right upper arm |
| M66.322 | Spontaneous rupture of flexor tendons, left upper arm |
| M66.329 | Spontaneous rupture of flexor tendons, unspecified upper arm |
| M66.331 | Spontaneous rupture of flexor tendons, right forearm |
| M66.332 | Spontaneous rupture of flexor tendons, left forearm |
| M66.339 | Spontaneous rupture of flexor tendons, unspecified forearm |
| M66.341 | Spontaneous rupture of flexor tendons, right hand |
| M66.342 | Spontaneous rupture of flexor tendons, left hand |
| M66.349 | Spontaneous rupture of flexor tendons, unspecified hand |
| M66.351 | Spontaneous rupture of flexor tendons, right thigh |
| M66.352 | Spontaneous rupture of flexor tendons, left thigh |
| M66.359 | Spontaneous rupture of flexor tendons, unspecified thigh |
| M66.361 | Spontaneous rupture of flexor tendons, right lower leg |
| M66.362 | Spontaneous rupture of flexor tendons, left lower leg |
| M66.369 | Spontaneous rupture of flexor tendons, unspecified lower leg |
| M66.371 | Spontaneous rupture of flexor tendons, right ankle and foot |
| M66.372 | Spontaneous rupture of flexor tendons, left ankle and foot |
| M66.379 | Spontaneous rupture of flexor tendons, unspecified ankle and foot |
| M66.38 | Spontaneous rupture of flexor tendons, other site |
| M66.39 | Spontaneous rupture of flexor tendons, multiple sites |
