M66.3 - Spontaneous rupture of flexor tendons
M66.37 - Spontaneous rupture of flexor tendons, ankle and foot
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